2.0t no start

2.0t no start

Postby Mandeep D » Mon Mar 14, 2011 9:54 pm

So.... Here's a follow up to my pneumonia-fueled problems last weekend.

If you recall the A3 stalled on me during my attempt to go and fill my Jerry can, and it wouldn't restart. I tried to pop start it down our hill, but it wouldn't start. I pulled the starter and it bench tested okay. I reinstalled it, and it does the same thing; the solenoid clicks but no spinny-spin. :x I know it's trying, because I did it enough that the starter got pretty warm.

I hope that I don't have a mechanical problem that's preventing the engine from turning - eep! I guess I'll try to get a socket on the crank to see if I can turn it? Maybe the starter is burned out & just doesn't have enough jam to crank it over? I did abuse it pretty badly that day....

Also - no new codes from the vag-com.....
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2.0t no start

Postby Dreamstate » Mon Mar 14, 2011 10:48 pm

Oh no! I wouldn't know where to begin with such a new engine. :(
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2.0t no start

Postby professor science » Mon Mar 14, 2011 11:21 pm

Check the plugs for flooding. That's my only advice.
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Re: 2.0t no start

Postby Dreamstate » Tue Mar 15, 2011 8:19 am

Did the timing belt skip a tooth or two when trying to bump start it?
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Re: 2.0t no start

Postby Maraschino Larry » Tue Mar 15, 2011 9:32 am

Dreamstate wrote:Oh no! I wouldn't know where to begin with such a new engine. :(

x2... and I own one :oops:

I think manually rotating the engine is a great next step- at least you'll know if everything can spin properly or not. G'luck bro!
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Re: 2.0t no start

Postby Mandeep D » Tue Mar 15, 2011 10:14 am

Dreamstate wrote:Did the timing belt skip a tooth or two when trying to bump start it?


It was already not starting when I tried to bump start it, so unless I've created a second problem, I don't think so....

update: crank bolt is 19mm 12pt grrrr
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Re: 2.0t no start

Postby wide_load » Tue Mar 15, 2011 11:15 am

Hmm... I'd be tempted to try a new starter just to rule it out 100%. I've seen a few that "click" and start/don't start occasionally and replacing the starter did the trick.

And said starter, at least one of them, worked fine when pulled from the engine.
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Re: 2.0t no start

Postby Mandeep D » Thu Mar 17, 2011 11:54 am

I tried push starting it again, but from a slowish roll it will only lock up the wheels (on gravel) :( . Seems like I may have a damaged clutch? Through the inspection cover I can see that the timing belt looks okay and when the starter tries to turn, the timing belt & cam sprocket move a bit, so I doubt I have head damage. With the clutch in, or in neutral it seems to roll fine, so probably not a tranny problem. Most likely a damaged clutch, but possibly something in the bottom end of the engine?
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Re: 2.0t no start

Postby Maraschino Larry » Thu Mar 17, 2011 12:04 pm

Can clutches 'jam' like that? There's just a friction and pressure plate... so a gear is either engaged or disengaged. Even if it was 'in between' I don't think it would cause the wheels to lock. Maybe clutch fork???

Did you get your hands on a big triple square yet? Knowing if the engine can turn over would really help.

Wait- you said from a slowish roll it locked tee wheels up.. so it does roll and then they lock? At approx what speed? Same thing in reverse?
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Re: 2.0t no start

Postby Dreamstate » Thu Mar 17, 2011 12:20 pm

I agree in trying to turn over that engine. If it turns over freely, you have a transmission problem.
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Re: 2.0t no start

Postby Mandeep D » Thu Mar 17, 2011 2:24 pm

When the car is in neutral or the clutch pedal is in it rolls freely, implying that the clutch disc is able to turn. When the car is in gear and dragged, the wheels will slide instead of turning, (in both directions) implying that the flywheel / pressure plate are clamping on the disc and preventing it from turning. I think there are really only two possibilities: the flywheel / pressure plate are stopping the engine from turning, or vice-versa. :(

I don't think I'll be able to turn the engine over by hand if the weight of the car at ~10 km/hr can't....
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Re: 2.0t no start

Postby Maraschino Larry » Thu Mar 17, 2011 6:30 pm

Take out the spark plugs, you don't need compression.
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Re: 2.0t no start

Postby Mandeep D » Mon May 16, 2011 12:42 pm

Long term update :oops:

I can turn the crank by hand only about 50-60 degrees. I took the valve cover off, to see what's up with the cams, and they look fine, both turn, etc. :shock: I was expecting to see a broken intake cam, as there are some known issues with the high presure fuel pump, which is driven off the cam.

T.belt is tight, so I don't have reason to suspect that it's jumped a tooth.... so what are my options? I guess a valve might have broke, or something in the bottom end....

Not sure what to do next, take the head off, or take the oil pan off.... :?:
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Re: 2.0t no start

Postby wide_load » Mon May 16, 2011 1:35 pm

Have you posted this to the 2.0t tech forums on the votex yet? Would hate to see you pull everything apart considering the root cause was running out of fuel / a routine bump start iirc.
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Re: 2.0t no start

Postby Mandeep D » Tue May 17, 2011 12:12 pm

Already bumped the heck out of it.....
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