Author Topic: Engine Died While Driving... Chain? Turbo?!  (Read 893 times)

Offline james-w

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Engine Died While Driving... Chain? Turbo?!
« on: 20 November 2020, 01:32 »
Hello,
New member to the forum but avid reader of it, some excellent stuff in here!

Unfortunately had the car fail on me while driving... Could be 100 things till I get it investigated, and I'm not much of a mechanic but wondered if its jumped timing going by previous posts, and being notorious, but after a long search I couldn't find much detailed info of similar experiences to what happened.

59/10 plate GTI, manual, 70k miles & serviced it only 6 days (drove 150~miles) before it happened..
The car hasn't felt itself the last month or so, and almost felt like there was a flat spot whilst accelerating in the higher gears, along with being a little sluggish. I put it down to requiring a service & maybe the valves are coked up.
(I should have got this looked at sooner... idiot :lipsrsealed: )

Anyway.. So I started it up after finishing work & sounded fine, car has always had a loud valve tick but never really had that initial rattle to suggest the tensioner was failing.

I drove about 5 miles, and just as I started accelerating towards 60mph after passing through a village, this almighty screech came from the engine and had massive loss of power.
Sounded like a total bag of spanners. No lights came up on the dash & theres still none.

Dipped the clutch and the noise went away altogether, sounding normal. I coasted it as far as I could get it, but with nowhere to stop on a single-track back road, I had to put it back in gear and drove another mile or so. The noise had gone for this mile whilst driving, but just had very little power.
Arrived at a junction and as I came to a standstill with the clutch dipped, the engine cut out.
I tried to start the car over again but nothing happened. Didn't turn over at all.

Once I got the car rescued and taken home (& thinking I had nothing to lose!), I tried starting it again and it did. Just sounds really rough on idle. Turned the car off sharpish and haven't tried since.

I'm wondering if anyone had any similar experiences or an idea of what could of happened? In hindsight I wondered if the screech was the turbo failing but I've had this nagging feeling its the timing that's jumped.

My plan of attack is to firstly check the timing and see if its in time & if it's still the original tensioner. The guy I bought the car from claimed it had been done but there was nothing he could show me to prove this. Then depending on findings, maybe try a compression test? I'm keen to investigate this myself.

Very much open to any help or suggestions you can help me with!! Absolutely gutted to say the least  :undecided:. Just got the front wings replaced & the front bumper re-sprayed, she's looking in her prime!

Offline Snoopy

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #1 on: 20 November 2020, 10:46 »
Compression test it first.
Current Stable:  Mk6 GTI, Mk1 GTI, Mk1 Leon & 3 British Classics.
2021 Plan +1-3: Mk6 GTI, Mk1 GTI, GRYaris, Mk1 Mini.
2022 Fingers crossed for a Manual GTI Edition 45.

Offline james-w

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #2 on: 20 November 2020, 16:20 »
Thanks snoopy, getting a shot of a tester next week. Would make sense to try the easy thing first! I thought i’d maybe damage valves if I hadn’t already when turning it over. Chances are it will need a good strip down.

Offline ramrod

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #3 on: 24 November 2020, 17:32 »
no error codes? or eml? this happen to me and it was a stuck open injector
Mk6 Gti - current daily
Mk3 16v Anni - retired daily now parked on 200,300 miles

Offline james-w

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #4 on: 29 November 2020, 19:54 »
I’ve just a cheap code reader ramrod and no codes or lights on the dash. Mate has a proper Autel £££ vag com jobby ill get a lend of and check. Will start with a compression test as snoopy mentioned.
Similar symptoms ramrod? I didn’t smell fuel or notice any smoke when it happened.

Haven’t had the time to do much due to work but hoping to attack it next week.

Offline james-w

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #5 on: 14 December 2020, 00:09 »
update:
tried to carry out a compression test by hand but there was interference, metal contact. Didn’t have much to lose so stripped down the timing side for an inspection. Right enough it’s the original tensioner that’s on... I reset the timing & the engine turned over easily after.
Carried out another compression test using the starter and all cylinders were around the 140psi mark.

I don’t want to tempt fate but looking like i might have gotten lucky here. Plan is now to order up a timing chain kit and replace what i need to (and pray) that it’s running again - Baring any leaks or any other problems, this looks like the culprit.

Offline Snoopy

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #6 on: 15 December 2020, 09:21 »
I hope you got luckie but I would say watch this all the way through. He gives a load of useful info on what can happen and how to fix it.

https://youtu.be/hRAcxGdkcZU
Current Stable:  Mk6 GTI, Mk1 GTI, Mk1 Leon & 3 British Classics.
2021 Plan +1-3: Mk6 GTI, Mk1 GTI, GRYaris, Mk1 Mini.
2022 Fingers crossed for a Manual GTI Edition 45.

Offline clubsport

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #7 on: 16 December 2020, 14:43 »
From the description of your noise and it going away as you dip the clutch, is there the posiibility this is related to the dual mass flywheel and not the engine as such? As they get old the sandwich splits and the dual masses can seperate.
I haven't heard the noise, just going on what you have posted.
Good luck!

Offline james-w

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #8 on: 17 December 2020, 00:50 »
cheers folks, just awaiting parts to arrive now which are taking ages to arrive... my fault for being so frugal and hunting about.

Fairly sure it’s not related to the DMF. Have had that happen as a passenger in my brothers TDi A3 and wasn’t similar, but something to not rule out if i don’t get to the bottom of it. Fairly sure it’s timing related after trying to turn it over initially. I can only hope i haven’t done damage to the head/valves but reasonably confident after the compression test once timing the was redone.

Offline james-w

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Re: Engine Died While Driving... Chain? Turbo?!
« Reply #9 on: 29 December 2020, 17:18 »
update: Got a kit sorted out and replaced timing chain, balance chain and tensioner. Rechecked compression and was still all good. Primed it and she turned over first time. Only note is there was a bit of a rattle on the first start? Actually sounded a bit like the nasty rattle that’s the giveaway for the tensioner on its way. Unsure what it could be.
Test ran it (rather cautiously..) and all good. No lights on the dash or error codes and was really smooth. I must have gotten seriously lucky not to bend valves.

Only thing i’ve noticed, on only one occasion, when it was idling it started to hunt a little. Still revved fine and hasn’t happened since? Any help on this or the rattle is appreciated. Anything i’ve found from searches points to a vacuum leak.