Okay, I will try to keep this as short as I can....first of all its a '98 Passat with the 1.8L Turbo...engine code AEB.
Timing belt failed due to failure of the tenioner. Bent all 8 exhaust valves. Took the head off and had it done. Bought a updated timing belt kit for the engine to install after I got the head back.
Everything went pretty smooth. Head went on good, no question there. Got to the timing belt and I noticed that I couldn't get the cam gear to completely line up with the notch while the crank was at TDC...like it was off half a tooth. Well that was the closest I could get it so I left it.
Got everything back together. The car ran great...no missing or anything..nice and smooth. The only problem was that is had absolutely no power whatsoever. Believe me, I have drove other cars with the 1.8L Turbo, and this car NO power compared to them. Seems like it must be a timing issue.
Took it into the dealership for diagnostic and they said the same thing...mentioning that the belt may be off a tooth (with a possibility that the cams were off...I hope the head shop didn't screw up).
Got it back apart again and tried playing with the belt..moved it tooth by tooth at the crank to see how close I could get it...and this is the closest the cam came to the mark....about a half a tooth off.
I screwed around with it some more today...and still couldn't get any closer. I don't know what is up...nothing has changed. The only thing I have changed is the updated tensioner, but that should make no difference.
Another thing that I noticed is that the cam gear is farther out that is was originally. You can see where the old belt ran...and also the gear has left marks on the timing cover where is has rubbed a little bit.
Um, I also did a compression check to see if that would show anything. All cylinders were around 120psi on the first crank, followed by 150psi on the 2nd, and 180psi on the 3rd. Seemed okay I guess...
Also, we did pull some codes off of it before we took it into the dealership. One was for the cat (it was bad, since then we have had that changed)...another was for the mass air flow sensor....but since fixing the cat, that code didn't show up. And a pending code that was on there was for the camshaft position sensor. I don't know if that is part of the problem.
Well I am getting tired of this problem. I am going to send it into a shop pretty soon because nothing I have done has fixed the problem.
And, I don't know if it is a mixture issue. It runs smooth...and the plugs look good too.
If any of you guys could throw out some recommendations that would be excellent. This car is just starting to bug me....but hey, at least I can put pull the bumper cover and put the radiator support in the service position in no time at all now...lol...I'm a pro
But then again, if I were a pro, I might know what the problem is