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rickyclean

Engine De-Coke and Vines Guildford Uselessness

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Hi All,

 

It's been a while since I last posted on here, but I thought I would share with you an issue I faced with my car last week, the terrible advice and technical knowledge I got from Vines and my pleasure at finding sound advice from BMR Turners Hill West Sussex...

 

So my F11 LCi 525d  went into limp home mode after its service last week at Vines of Guildford, so I took it back to them. They did a diagnostic and was told either the intake manifold actuator had failed and was not activating one of the swirl flaps, which would be replaced under warranty or, if the actuator has failed due to the engine being coked, then I would need a replacement intake manifold and have an engine de-coke which is not under warranty. What made me question Vines BMW methods was they said that they needed to remove the manifold to determine whether the engine was indeed coked which would be 3 hours labour and once they had removed the manifold I was committed to any repair. This is simply nonsense, and I told the service advisor as such. A simple compression test would be able to ascertain whether there was a coking issue and secondly the manifold was a single enclosed item that had a few bolts and could be removed in 10 minutes and thirdly if you are able to ascertain that there is or is not a coking issue,  to claim I am now committed to the repair was total rubbish as they are more than capable of putting the manifold back. He did not seem to know what to say at that point. He then said he was unable to quote for the job, but only offer an estimate as the job could take up to 3 days… Again total tosh…. If there is a de-coke needed it takes 30 minutes to do (I had it done to my mini last year) not the 4 hours he said it would take and replacing the manifold would take tops 20 minutes so the maximum time is an hour. He said it was a hugely complicated job and I clearly did not know what needed to be done , which as you can imagine angered me somewhat…. After I demonstrated I knew exactly what was involved and the time it took he admitted that he need the flexibility as they were down on staff. I said I was not prepared to pay for time that was not needed and to say he needed three days was ridiculous. He then got his boss who agreed they only needed 3 hours, but I still said no you don’t and what the hell were they pulling. This is after performing a service on two occasion that was not what I booked and tried to charge me for……

So I said that I wanted the car back and they tried to protest saying I could not drive it home… again clap trap as the limp home only happened once and did not do it again. The estimate came in via email and was from £1,700 - £2,200 (inc VAT) but subject to change, but the minimum being £1,700…. They also said the job would only take 3 hours but would need to have the car for  3 days due to staff shortages…..

Fast forward to yesterday.  I decided I was going to take the car to the BMW specialists in Turners Hill near me called BMR and the chaps that did my Mini’s cam chain. I started the car and the engine management light came on but the car seem to be behaving correctly. Got to the garage, explained what happened and what Vines said and they laughed but were not surprised. I spoke with one of the co owners and he confirmed that a compression test would immediately confirm a coking issue, but he then told me something I did not know. As the manifold issue is a known problem so the manifold had a small dipstick/nipple at the top of the manifold expressly to check if the engine had a coking issue and was a simple 5 minute job, which Vines should have checked that immediately….. They did a quick diagnostics and confirm the actuator had failed or seized and that swirl flap 4 was non longer activating correctly. Best case scenario there is no coking and actuator has failed and therefor should be replaced under warranty or worst case a de-coke and new manifold would be needed…. They would like to have the car for half a day but would charge 2 hours labour maximum as it is a “simple job”.

I was then asked if I wanted to see what they did for this job as they were about to start that exact process on a 2012 520d. I obviously said yes and they showed me the coked up manifold and cylinders. It became very clear to me my car was probably suffering the same problem. So booked it in for Thursday….. As the manifold is a sealed Item and made of plastic it is impossible to clean and is an expensive part at £600 +VAT and the de-coke would be £230 +VAT all in £1,015. Vines want £690 +VAT for the manifold but a whopping £708 +VAT for the de-coke plus labour charges…. So a huge saving but still financially ruinous when you were hoping to go on holiday! Suffice to say I much prefer dealing with people who have true product knowledge and not the local village idiots that Vines seem to employ as their service advisors (who clearly do not have any product knowledge at all). So I will no longer be take my car to Vines unless it is for a warranty item as they are far to expensive and frankly I simply don't trust them..

 

Cheers All

 

RC

Edited by rickyclean

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A sadly not uncommon tale of BMW dealer incompetence. Well done for flushing them out as any non-technical owner would have had to just bend over and take it.

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I am afraid car dealers/mechanics/garages are now like plumbers.  If you find a good one, stick with them.  I imagine the dealer service departments have targets and need to justify their team size.

 

I use to take my cars to a council MOT center, as I knew they were not going to get any work out of any failures.  I still service my cars and van whenever possible, just for piece of mind.

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I've been using the Council MoT facility for a few years. They even charge less for it! 

Mine's going in on Thursday. 

Have to say I'm ok with my local Lloyds dealership though. 

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5 hours ago, rickyclean said:

Hi All,

 

It's been a while since I last posted on here, but I thought I would share with you an issue I faced with my car last week, the terrible advice and technical knowledge I got from Vines and my pleasure at finding sound advice from BMR Turners Hill West Sussex...

 

So my F11 LCi 525d  went into limp home mode after its service last week at Vines of Guildford, so I took it back to them. They did a diagnostic and was told either the intake manifold actuator had failed and was not activating one of the swirl flaps, which would be replaced under warranty or, if the actuator has failed due to the engine being coked, then I would need a replacement intake manifold and have an engine de-coke which is not under warranty. What made me question Vines BMW methods was they said that they needed to remove the manifold to determine whether the engine was indeed coked which would be 3 hours labour and once they had removed the manifold I was committed to any repair. This is simply nonsense, and I told the service advisor as such. A simple compression test would be able to ascertain whether there was a coking issue and secondly the manifold was a single enclosed item that had a few bolts and could be removed in 10 minutes and thirdly if you are able to ascertain that there is or is not a coking issue,  to claim I am now committed to the repair was total rubbish as they are more than capable of putting the manifold back. He did not seem to know what to say at that point. He then said he was unable to quote for the job, but only offer an estimate as the job could take up to 3 days… Again total tosh…. If there is a de-coke needed it takes 30 minutes to do (I had it done to my mini last year) not the 4 hours he said it would take and replacing the manifold would take tops 20 minutes so the maximum time is an hour. He said it was a hugely complicated job and I clearly did not know what needed to be done , which as you can imagine angered me somewhat…. After I demonstrated I knew exactly what was involved and the time it took he admitted that he need the flexibility as they were down on staff. I said I was not prepared to pay for time that was not needed and to say he needed three days was ridiculous. He then got his boss who agreed they only needed 3 hours, but I still said no you don’t and what the hell were they pulling. This is after performing a service on two occasion that was not what I booked and tried to charge me for……

So I said that I wanted the car back and they tried to protest saying I could not drive it home… again clap trap as the limp home only happened once and did not do it again. The estimate came in via email and was from £1,700 - £2,200 (inc VAT) but subject to change, but the minimum being £1,700…. They also said the job would only take 3 hours but would need to have the car for  3 days due to staff shortages…..

Fast forward to yesterday.  I decided I was going to take the car to the BMW specialists in Turners Hill near me called BMR and the chaps that did my Mini’s cam chain. I started the car and the engine management light came on but the car seem to be behaving correctly. Got to the garage, explained what happened and what Vines said and they laughed but were not surprised. I spoke with one of the co owners and he confirmed that a compression test would immediately confirm a coking issue, but he then told me something I did not know. As the manifold issue is a known problem so the manifold had a small dipstick/nipple at the top of the manifold expressly to check if the engine had a coking issue and was a simple 5 minute job, which Vines should have checked that immediately….. They did a quick diagnostics and confirm the actuator had failed or seized and that swirl flap 4 was non longer activating correctly. Best case scenario there is no coking and actuator has failed and therefor should be replaced under warranty or worst case a de-coke and new manifold would be needed…. They would like to have the car for half a day but would charge 2 hours labour maximum as it is a “simple job”.

I was then asked if I wanted to see what they did for this job as they were about to start that exact process on a 2012 520d. I obviously said yes and they showed me the coked up manifold and cylinders. It became very clear to me my car was probably suffering the same problem. So booked it in for Thursday….. As the manifold is a sealed Item and made of plastic it is impossible to clean and is an expensive part at £600 +VAT and the de-coke would be £230 +VAT all in £1,015. Vines want £690 +VAT for the manifold but a whopping £708 +VAT for the de-coke plus labour charges…. So a huge saving but still financially ruinous when you were hoping to go on holiday! Suffice to say I much prefer dealing with people who have true product knowledge and not the local village idiots that Vines seem to employ as their service advisors (who clearly do not have any product knowledge at all). So I will no longer be take my car to Vines unless it is for a warranty item as they are far to expensive and frankly I simply don't trust them..

 

Cheers All

 

RC

 

For anyone reading this regarding the mechanical issue rather than the dealer experience there are a couple of facts that need realigning.

 

A compression test may highlight a terribly coked inlet tract around the intake valves causing one of them to no longer seal correctly but not necessarily a coked inlet manifold/plenum although they usually go hand in hand.

 

The intake manifold is definitely more than a 10 minute job to remove from the car. I think I took an hour and a half as I struggled to remove the electrical connection under the rear of the manifold and the charge pipe was a sod to remove. A seasoned mechanic on his or her 2nd or 10th one will probably halve that but I doubt any less.

 

The intake manifold is not a sealed unit as mentioned and it is easy to strip down and clean. Cleaning is a messy job but definitely doable.

 

The swirl flaps are made of plastic and are moved by an actuator motor that has a square actuator rod attached. The square rod skewers the 4 or 6 swirlflaps and it is the rotation of the actuator motor acting on the rod that opens and closes the swirlflaps. If there is too much gunk in the inlet manifold the swirlflaps will not turn properly and I can imagine that with heavily coked flaps, they may strip around the square actuator rod or just jam the rod so the motor throws an error.

I'm not sure how any diagnosis would show that 1 of the 4 swirflaps was jammed as they are not monitored individually and all work in unison as they're attached to the same rod.

 

Don't let them replace the inlet manifold without attempting a clean first (unless you are loaded and don't care for the cost). While I'm all for changing failed parts, unless there is a hole in the manifold due to overheating because of the coke build up, cleaning a perfectly serviceable part is what needs to be done.

 

See my post here for my F11 when I removed and cleaned the manifold using chemicals, a large bottle brush and my Karcher pressure washer. By the time I'd finished cleaning it it was like new and improved the MPG. I didn't clean the inlet tract around the valves as this is best done using walnut blasting and mine wasn't in a terrible shape.

 

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10 hours ago, Matthew Ashton said:

 

A compression test may highlight a terribly coked inlet tract around the intake valves causing one of them to no longer seal correctly but not necessarily a coked inlet manifold/plenum although they usually go hand in hand.

 

 

Thats what I was thinking, how could a compression test identify a blocked up inlet manifold? Unless a valve failed to re-seat due to carbon build up but you would have noticed the loss of power with that I would have thought. Loss of compression could be due to a number of things. A compression test can only test for compression in the cylinders nothing else.

 

Sounds like Vines just didn't want to know as it was too difficult or for another reason.

 

Halving the BMW oil servicing interval, more engine air filter changes, running on decent fuel would all help keep things cleaner on the inside. 

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1 minute ago, 535i Andrew said:

 

Thats what I was thinking, how could a compression test identify a blocked up inlet manifold? Unless a valve failed to re-seat due to carbon build up but you would have noticed the loss of power with that I would have thought. Loss of compression could be due to a number of things. A compression test can only test for compression in the cylinders nothing else.

 

Sounds like Vines just didn't want to know as it was too difficult or for another reason.

 

Halving the BMW oil servicing interval, more engine air filter changes, running on decent fuel would all help keep things cleaner on the inside. 

 

Andrew on the changing filters and oil keeping things cleaner, while I agree they will reduce the potential for coking up, with the EGR and crankcase ventilation routing through the intake there is little you can actually do other than cleaning maintenance at around 60 - 80k mile intervals. 

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I know, I was thinking as Tesco says, every little helps. ;) 

 

The current edition of Car Mechanics give an excellent article on cleaning (and how they work) EGR valves and explains the coke build up on both Diesel and particularly GDI (Petrol for us Brits) engines.

 

17 minutes ago, Matthew Ashton said:

 cleaning maintenance at around 60 - 80k mile intervals. 

 

Indeed, I re-read your linked post above a few days ago and with the articles I've just read it got me thinking about what may lurk in mine.  Next interim oil service I'll throw in a new air filter. ;)

 

 

 

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On 23/07/2019 at 15:16, rickyclean said:

and that swirl flap 4 was non longer activating correctly

 

On 23/07/2019 at 21:35, Matthew Ashton said:

The swirl flaps are made of plastic and are moved by an actuator motor that has a square actuator rod attached. The square rod skewers the 4 or 6 swirlflaps and it is the rotation of the actuator motor acting on the rod that opens and closes the swirlflaps. If there is too much gunk in the inlet manifold the swirlflaps will not turn properly and I can imagine that with heavily coked flaps, they may strip around the square actuator rod or just jam the rod so the motor throws an error.

I'm not sure how any diagnosis would show that 1 of the 4 swirflaps was jammed as they are not monitored individually and all work in unison as they're attached to the same rod.

 

As I've removed the flaps from my current E60 and previous E46, and having read up on them quite a bit, I read the OP I thought "Oh! Individual flap control and monitoring on the later model cars! What on Earth for?" And an intake manifold that can be removed in 10 minutes, very impressive! :)

 

Keliuss

 

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1 hour ago, Keliuss said:

And an intake manifold that can be removed in 10 minutes

Yeh, I know I'm a bit slow at these things but it takes me more than 10 minutes foreplay just to remove the cabin filters and scuttle gubbins. 

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Glad I'm not the only one calling OP out on compression.  You sound heated and you're throwing car terms around like you know what you're talking, I can understand why the dealership didn't sound too happy.

 

Also remember they charge premium, they always have.  Also understand that you can't check if it's coked unless it's removed or use an inspection camera.  How are you going to compression test it?  Pull an injector?  Still needs a lot of digging to get that far. 

 

Also, from your screed of text: BMW said 3 hours, Indy says 2.  Hardly a big deal, BMW will be by book, Indy won't be and be a "it's an easy job" remark.

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As a new first time bmw owner my car had been serviced all it’s life at vines, so would have thought “can’t go wrong” but I have found an independent guy in Worcestershire who isn’t cheap cheap but seems very knowledgeable in what he does, I’m happy to pay him once I’ve got the google mechanic to research stuff , not always best at the dealers !!!

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On 24/07/2019 at 07:51, 535i Andrew said:

 

Thats what I was thinking, how could a compression test identify a blocked up inlet manifold? Unless a valve failed to re-seat due to carbon build up but you would have noticed the loss of power with that I would have thought. Loss of compression could be due to a number of things. A compression test can only test for compression in the cylinders nothing else.

 

Sounds like Vines just didn't want to know as it was too difficult or for another reason.

 

Halving the BMW oil servicing interval, more engine air filter changes, running on decent fuel would all help keep things cleaner on the inside. 

 

I am sure the chaps at BMR would be happy to explain why the compression test would help diagnose the coking issue. The carbon build up on the Swirl flaps means there is a loss of torque/power and made the actuator fail or seize as the flaps could no longer move. Judging by the increased perceived increase in power since picking the car up yesterday, the improvement in low end "grunt" and the smoother running of the engine, the de-coking and manifold replacement has had a huge impact. As I had not really noticed a loss of power myself I am assuming that this was an issue on the car when I bought it (or at least was building up). Whatever the case may be, the actual nipple/dipstick on the manifold itself is the quickest route to an initial diagnosis. I have the car serviced every year regardless and always use premium diesel - not supermarket fuel. The main contributor apparently will be stop start city type driving ad the engine never really has a chance to go into its perfect operating window. As it is mostly my better half that drives the car on the school run, this will be the largest factor in the carbon build up, so I will be using the car at least one day a week on my 100 mile daily commute to the office. I have some more information on the repair which I will share separately. 

Edited by rickyclean
spelling mistake

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On 23/07/2019 at 21:35, Matthew Ashton said:

I'm not sure how any diagnosis would show that 1 of the 4 swirflaps was jammed as they are not monitored individually and all work in unison as they're attached to the same rod.

 

 

 

I was there for the diagnosis and I was shown on the screen that swirl flap 4 had failed.... I am sure all your reasonings are correct, I am only reporting back on what I was a) told and b) saw with my own eyes and I have no reason to go out of my way to deliberately mis inform...

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So I now have the car back and thought I would share with you the hoops I had to go through to get the car fixed.

 

Dropped the car off at BMR on Thursday and got some bad news. The manifold was ordered Monday and should have arrived that morning. When they received all the parts from their supplier a manifold shaped box was missing so called them back. They was then told that the manifold was on order but there is a global shortage of that part and won’t be ready for delivery until mid August at the earliest… So I have asked BMR to do the checks anyway and to perform the de-coke if it is needed. I then spent the morning calling all the BMW dealers in the south east to see if they have the part with no success, all saying the same thing “global shortage and not available until mid August” but with the caveat “that more likely beginning of September”…. In short a disaster…. So I then spent the morning trawling the internet and eBay as it was  likely to have to go second hand short term and came across this:  https://rover.ebay.com/rover/0/e11051.m43.l1123/7?euid=586f7dbfd333446da21cb55a9c738218&bu=43164944814&loc=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F273755417972&sojTags=bu=bu
 
This is a company in Berlin that completely recondition the manifolds (including the actuator), which are then tested with a 2 year guarantee… Price £169…… The deal is you send them your old part in return so that they can recondition it and sell it on, which iI thought was rather clever. Passed this on to BMR for them to confirm it had everything they needed, which they confirmed it did. Ordered it immediately and for an additional cost of £30 had it "next day" delivered. All arrived on Friday and drove over to BMR. 
 
This is when I was informed that I was "bloody lucky" as the one of the swirl flaps had a crack across it's spine and was very loose and was on the verge of falling off (with all the consequences that would bring). Here are pics of my manifold so you can see the condition it is in. Barry at BMR said that they would aim to do the job on Monday for me in readiness for our trip abroad, so all looking good.
 
IMG_7321.thumb.jpeg.4c20fdacd94ae2d49e0073d944f21499.jpegIMG_7320.thumb.jpeg.726f7a5f3ef4121312ec34e17e1a7961.jpegIMG_7317.thumb.jpeg.f8ef1b3d621779822255f99fad4cc90e.jpegIMG_7319.thumb.jpeg.0d9e4dded12240dff3acdfd7ca70708b.jpegIMG_7318.thumb.jpeg.d7079ab3fd6ed0d707aa9ab342d0db63.jpeg
 
Got a call Monday afternoon from BMR to say the car was ready to be picked up. Made may way over not sure what to expect bill wise.... Removal and re installation of the manifold and walnut blast £350.78 (inc VAT). So all in it cost me £549.78, a significant saving from either Vines or BMR. As I plan to replace the car next May, hopefully the manifold and deck will last form the remainder of my stewardship.
 
I certainly can highly recommend BMR for their excellent service and help and PMG for their timely delivery and for what seems to be a very good reconditioned item.
 
IMG_7285.thumb.jpeg.2840b0436697b71a2cad3648ae283fd7.jpegIMG_7322.thumb.jpeg.15b52aed40772c1b22296a2a8cfce9a6.jpeg
 
Here are a couple of pictures of the reconditioned item:
 
IMG_7286.thumb.jpeg.240515463a3307ed12aaa19ce6e1446d.jpegIMG_7285.thumb.jpeg.a3e572d3660c3927fb1f9de8a2265045.jpeg
 
 
I hope this information was useful and should I have not got all the facts as accurate as possible then apologies in advance
 
 
 

 

IMG_7322.jpeg

Edited by rickyclean
added a couple of pictures

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Glad you got it sorted. Now that you've been able to have a good look at the manifold I'm sure you've noticed that all the flaps are fixed to the one rod, so it's impossible for one to be diagnosed as stuck. It's all or none, so sounds like someone was trying to bamboozle you or some obscure diagnostic readout with a "4" in it was misinterpreted. 

 

Keliuss 

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On 23/07/2019 at 15:16, rickyclean said:

Hi All,

 

It's been a while since I last posted on here, but I thought I would share with you an issue I faced with my car last week, the terrible advice and technical knowledge I got from Vines and my pleasure at finding sound advice from BMR Turners Hill West Sussex...

 

So my F11 LCi 525d  went into limp home mode after its service last week at Vines of Guildford, so I took it back to them. They did a diagnostic and was told either the intake manifold actuator had failed and was not activating one of the swirl flaps, which would be replaced under warranty or, if the actuator has failed due to the engine being coked, then I would need a replacement intake manifold and have an engine de-coke which is not under warranty. What made me question Vines BMW methods was they said that they needed to remove the manifold to determine whether the engine was indeed coked which would be 3 hours labour and once they had removed the manifold I was committed to any repair. This is simply nonsense, and I told the service advisor as such. A simple compression test would be able to ascertain whether there was a coking issue and secondly the manifold was a single enclosed item that had a few bolts and could be removed in 10 minutes and thirdly if you are able to ascertain that there is or is not a coking issue,  to claim I am now committed to the repair was total rubbish as they are more than capable of putting the manifold back. He did not seem to know what to say at that point. He then said he was unable to quote for the job, but only offer an estimate as the job could take up to 3 days… Again total tosh…. If there is a de-coke needed it takes 30 minutes to do (I had it done to my mini last year) not the 4 hours he said it would take and replacing the manifold would take tops 20 minutes so the maximum time is an hour. He said it was a hugely complicated job and I clearly did not know what needed to be done , which as you can imagine angered me somewhat…. After I demonstrated I knew exactly what was involved and the time it took he admitted that he need the flexibility as they were down on staff. I said I was not prepared to pay for time that was not needed and to say he needed three days was ridiculous. He then got his boss who agreed they only needed 3 hours, but I still said no you don’t and what the hell were they pulling. This is after performing a service on two occasion that was not what I booked and tried to charge me for……

So I said that I wanted the car back and they tried to protest saying I could not drive it home… again clap trap as the limp home only happened once and did not do it again. The estimate came in via email and was from £1,700 - £2,200 (inc VAT) but subject to change, but the minimum being £1,700…. They also said the job would only take 3 hours but would need to have the car for  3 days due to staff shortages…..

Fast forward to yesterday.  I decided I was going to take the car to the BMW specialists in Turners Hill near me called BMR and the chaps that did my Mini’s cam chain. I started the car and the engine management light came on but the car seem to be behaving correctly. Got to the garage, explained what happened and what Vines said and they laughed but were not surprised. I spoke with one of the co owners and he confirmed that a compression test would immediately confirm a coking issue, but he then told me something I did not know. As the manifold issue is a known problem so the manifold had a small dipstick/nipple at the top of the manifold expressly to check if the engine had a coking issue and was a simple 5 minute job, which Vines should have checked that immediately….. They did a quick diagnostics and confirm the actuator had failed or seized and that swirl flap 4 was non longer activating correctly. Best case scenario there is no coking and actuator has failed and therefor should be replaced under warranty or worst case a de-coke and new manifold would be needed…. They would like to have the car for half a day but would charge 2 hours labour maximum as it is a “simple job”.

I was then asked if I wanted to see what they did for this job as they were about to start that exact process on a 2012 520d. I obviously said yes and they showed me the coked up manifold and cylinders. It became very clear to me my car was probably suffering the same problem. So booked it in for Thursday….. As the manifold is a sealed Item and made of plastic it is impossible to clean and is an expensive part at £600 +VAT and the de-coke would be £230 +VAT all in £1,015. Vines want £690 +VAT for the manifold but a whopping £708 +VAT for the de-coke plus labour charges…. So a huge saving but still financially ruinous when you were hoping to go on holiday! Suffice to say I much prefer dealing with people who have true product knowledge and not the local village idiots that Vines seem to employ as their service advisors (who clearly do not have any product knowledge at all). So I will no longer be take my car to Vines unless it is for a warranty item as they are far to expensive and frankly I simply don't trust them..

 

Cheers All

 

RC

+ 1 for BMR. The only place I trust to look after my E39 540.

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I know what I am going to say will be quite naive, but, look at the state of that old inlet manifold. I know why modern cars have this issue, but, bloody hell, inlet manifolds of years gone by would be very clean after years of use.

 

My assumption is that this situation would not be anywhere near as bad on a petrol/turbo car? Am I right? Roll on my 740i, 640i, 540i as this will be my next car (just don't know when lol............)

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9 hours ago, nashdm2 said:

I know what I am going to say will be quite naive, but, look at the state of that old inlet manifold. I know why modern cars have this issue, but, bloody hell, inlet manifolds of years gone by would be very clean after years of use.

 

 

It is scary what lurks in there. I first saw this on another forum on a 2002 E46 320d with 80k miles, it was just as mucky in there. The pics are lost thanks to photobucket but the text gives an idea on what it was like.

 

http://www.bavarian-board.co.uk/forum_posts.asp?TID=47656&PN=1

 

Years ago I took the inlet tracts and idle control valve off my 1990 Senator with 91k miles to clean them out in an attempt to cure a hesitation. Very little in the way of build up and what was there looked liked baked on grease on a baking tray but came away very easily with Wynnes Carb cleaner. 

 

9 hours ago, nashdm2 said:

 

My assumption is that this situation would not be anywhere near as bad on a petrol/turbo car? Am I right? Roll on my 740i, 640i, 540i as this will be my next car (just don't know when lol............)

 

I hope so! But in theory a modern petrol engine is very similar to a Diesel now as the fuel is injected directly (GDI) into the cylinders rather than being injected upstream (port injection) of the inlet valves. Therefore any blow by gasses and fumes etc. that are recycled out of the crankcase or cylinderhead sticks to the back of the inlet valves as there is no fuel washing to keep them clean.

 

I've already scoped out removing my inlet manifold and charge air pipes to clean them out if required. Failing that it's walnut blasting of the ports in the head. But in the meantime I can use decent fuel and change the oil and engine air filters yearly.

 

This months Car Mechanics magazine has a good article on this.

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Am glad to hear that they sorted your car and that you had such a good experience with BMR -- nothing can beat a reliable and trustworthy indy, I take my current car up to an indy in Yorkshire even though I live in London.

 

Hearing about your experience as well as input from @Loadmaster with BMR is fantastic given that I am considering a move to that general area and an F11 as a daily driver.

 

Hope the holiday goes smoothly.

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