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Engine lost power, stalled from 2k revs, now won't start


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The sparks are fine, I've already checked the leads etc last week, they are all sparking ok when the ignition is on. How would I go about checking the fuelling? I believe the pump is still buzzing when you turn the ignition on....forgive my ignorance, my tools and knowledge stops at changing oil/brake pads/sparkplugs I'm afraid....

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Gotcha, cheers.

I'll take five before doing this, a bit pissed at people telling me all day how busy they are and how much work they've got on...."that's great mate, but it doesn't help me get my car back on the road does it?" :angry::angry::angry:

That's directed at the garages, not anyone here btw

Edited by renandstimpey
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Right, so from here on in, no one take any mechanical/engine related advice from me!

Compression tested, only one cylinder has full compression (left hand cylinder), 2 of them are on the floor (centre left and right hand cylinder), the fourth one is barely registering anything (centre right cylinder). There is fuel getting to the engine....

At best it's headgasket failure, though there is no coolant loss or oil in the mix....at worst I could have some melted pistons and other bits :(

F**k

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I don't think it's the gasket, as from previous experience of h/g failure the car would start and run - I have a feeling it's something in the bowels of the engine that has failed. It may well be cheaper than a gearbox job, but that doesn't really make me feel any better!

...a bit like saying "well, yes, you've been stabbed, but hey! you could have been shot!"

:lol:

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Got to say, if those reading are correct, this if the first major GTI engine failure I have heard of.

Did you test it yourself?

Nope, it was done directly in front of me by two mechanics with all the proper kit, that's what the gauge showed when they cranked it over. Who knows what delights await when they get the head off the thing?

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I bought it in July 2007 with 18 and a bit thousand on the clock, it was a demo car for about 9 months then owned by a chap in Derby who did no more than 4000 a year - the service history was as thick as a phone book, he had VW do EVERYTHING....even buying new Toyo's at about £90 a corner! Since I have had it, it has been to Midland VW for all it's servicing needs, and had the belts and tensioners done in late '07/early '08 - these are due again now. It's never missed a beat, it has the usual faults of the high level brake light failing and the front passenger window having a mind of it's own, but that's it. Other than tyres and brake pads, it's wanted for nothing and has never blinked since I've owned it. There's no reason for anything to just fail like it has as far as I can see, unless it is some kind of freak failure of something? It has 58,800 on the dials now, it does about 7-8k a year max, it's not thrashed everywhere - yes sometimes I use it's performance but then who with a Gti doesn't? It's a weird one, I'm pretty flummoxed...

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Have you lost any significant levels of oil or coolant up till now?

Could just be valves hit each other

No loss of any coolant or oil, it was serviced in March (I think) this year and both are still as they should be, no leaks or nasty holes with fluid leaking out

Edited by renandstimpey
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Any smoke when this failure happened? Otherwise there is no way it's piston/ring related.

You said it sounds weird when it cranks over? And therea no compression, you sure the tensioner on the head hasn't lost tension? I'd check the timing from top to bottom, doesn't sound right to me.

John

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Yeah is does seem odd, as it's essentially a catastrophic failure with no actual evidence to support it.

Different car i know, but just showingthe pic as will be similar.

Tensioner Casper mentiones is the little thing between the pulleys

DSC04897800x600.jpg

Edited by Bickerton
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It was the Auto electrician who originally said it sounded funny - what he meant was it sounded like a car that has a compression issue in the engine, I guess to him he recognised something in the sound when I cranked it over - he clearly was correct after all, as we found when it was actually compression tested? To me it just sounded like an engine struggling to spark into life...

I'm thinking you mean the reddish looking disc behind the large pulley/below the two camshaft pulleys - this would be one of the tensioners that is changed in the 3 year/60,000 mile cambelt change? (never having seen the kit or the work being done I wouldn't know) Bearing in mind the car is over the prescribed 3 year change period by a month or 3, that would be pretty f'ing amazing if it has gone and that's what has caused it? A simple belt and tensioner change could in fact fix the problem then?

Mr. Casper, yes no smoke, oil or anything when it cut out, the complete opposite of when my old Rover 200 Vi let go, sending a cloud of oil and water out of the exhaust, along with two of the pistons in pieces down the exhaust, and a third one sticking out of the front of the block!

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I'd check the timing mate, take the belt cover off, put a jack under the sump on a block of wood and take the engine mount off, check the tensioners and timing marks.

We have seen cam belt go before the three year 60k mark before, the idler pulle is a known weak point.

John

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Have you got the results of the compression test? Also was a cylinder leakage test carried out?

The only thing that has been done so far is the mechanics coming out to my place, popping the compression gauge on each of the cylinders and checking the readings when cranking the engine off the ignition....I'm still waiting for them to have the space in their garage to tow it over there to start pulling things out, a week after it cut out - yes, annoying isn't it? Unfortunately they are the ones that can look at it the soonest, hopefully this Monday....Midland VW can't do anything until next week. I'm stuck until then with a very heavy red paperweight outside.

I'm leaning towards the timing being the issue, only because there are no symptoms that would point to one of the other problems that has been suggested, however my engine skills ran out about 2 1/2 pages ago! Don't know if this helps at all, but when I turn the ignition to start the engine, the camshaft pulleys are rotating backward and forward, rather than turning?

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Don't know if this helps at all, but when I turn the ignition to start the engine, the camshaft pulleys are rotating backward and forward, rather than turning?

Theres your problem.

The crank shaft pulley to camshaft pulley belt could be missing teeth, or the inlet camshaft pulley (VVT pulley) has come loose.

Whatever it is, do not try and start the engine any more, you are making the damage that has been caused worse.

Check the timing belts/marks its an easy task to do on your own, even with limited knowledge.

If you want i can give you a how to on the way to check it.

John

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Aaaaargh!!! Right, well the damage has been done by now anyway when I tried to start it on the day, plus the mechanics that have turned it over etc, no doubt the sodding valves are all bent to buggery by now :angry:

The how-to would be useful, as I have no idea at all what I'm looking for, cheers :wacko:

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