Advise on mis-firing engine

[mk5_gt_tdi]

Car Details: Golf MK5 GT TDI (140 bh) 54/Jan 55 plate. 91,000 miles

Hello,

Hoping to get some quick advise on a mis-firing engine. To give some background information (apologies for the length of the post in advance!)

The engine had been vibrating for 6 months or so particularly after long runs – it was noticeable when the car was idle and ticking over when waiting in traffic etc. After reading some posts on various forums this seemed to be a common issue and there were lots of different opinions on possible causes but a couple said not to worry if it was starting and was not loosing power.

Over the last couple of weeks I noticed the engine was shaking much more vigorously and after getting caught up in a lengthy traffic jam the issue got worse. After clearing the accident I applied the power but it was not responsive (revs getting stuck at 2,000). I pulled over and started up again and managed to make it to a local garage but the engine juddered badly particularly in the higher gears.

The garage scanned the engine and I agreed to replace some parts included an injector on cylinder (refurbished one, glow plug were replaced and wiring loom.). Looking back I should have probably not agreed to this work without having a full scan by VW but there we go.

Unfortunately the work carried out by the garage didn’t solve the issue. They said they’d done all they could do and it would need to go into VW garage for diagnostic check. This check found that the engine was misfiring on cylinder one. VW have suggested having a compression test carried out at the cost of £250 to identify what is causing the misfire.

I guess I have a couple of questions. Would you recommend I have VW carry out the suppression test to identify the problem? It seems a lot to me so wondered if this type of test can be carried out elsewhere or whether it is necessary at all given what I’ve described above. I've spent 500 on the work the garage carried out so this is turning out to be pricey.

I am currently driving the car short distances but the juddering is unbelievable so really need to make a decision.

Any advise would be appreciated.

Cheers!

[itavaltalainen]

Looking at your mileage I would go to independent VW specialist. I would also look at dual mass flywheel for the vibration issue.

[Doctle Odd]

^^yep^^

[mk5_gt_tdi]

Looking at your mileage I would go to independent VW specialist. I would also look at dual mass flywheel for the vibration issue.

Cheers have booked it in next week.

[mk5_gt_tdi]

Looking for some more advise on this issue. The specialist garage I took it to have ran a compression test and determined that there is no compression on the 1st cylinder and too much on the 3rd. They are asking for £400 to take the head off and look into what is causing the issue. So it's £400 before anything has been fixed. Seems a lot to me but called another specialist near by and they are saying that sounds about right for the labour involved. Would be good to get anyones thoughts.

[simon rampton]

I have the same problem with my gt tdi 140.
It has had a whole new DMF kit fitted 2 weeks ago costing nearly £900, they claimed the juddering was from a siezed clutch pulley which was causing the belt to vibrate.
When the pulley was changed all was ok for about half an hour, then the juddering came back, in my opinion far worse than before.
seems to be more so when stationary or when the engine is under load, ie, going up hill feels like the wheels are going to fall off.
After doing research, aparently when the timing belt is changed and the timing is reset, it has to be spot on with no margin for error, otherwise this can cause the lumpy idle.
I have taken it into the garage this morning for them to try and solve, so i will post again and let you know what the problem is with mine.
May help you!!!