Changed timing belt car starts and stalls right out now

[cut'em]

So I just changed my timing belt on my 2012 Jetta TDI and now the car starts momentarily then shuts right off. After about a dozen attempts it starts and idles fine. Driving around it feels normal, but it's seems much louder now (the diesel knock) and if I shut if off its a *!#$@ to start again. This is the second belt I've done and bought the complete tool kit to lock everything in place. I did notice that in order to get the key into the pressure pump pulley I had to wait till the belt was removed and then turn the pulley maybe 1/8 of an inch before the slot lined up with the hole. Did I screw up by doing this? Not sure if I loosened the three bolts first, then moved just the pulley, or if I moved the entire pump shaft 1/8 of an inch. Also how to I diagnose the vehicle to determine where I may have gone wrong?
Thanks in advance..
Dale

 

[cut'em]

Couple other points... I did loosen both the cam and pump sprockets per instructions AFTER pinning them in place. Only thing that was kinda weird is that the crank would not line up exactly to place its retainer with the arrows lined up (maybe 3/8" off) when I was trying to line up the pin on the cam, which was the first one I set. Then I moved to the fuel pressure pump and that pin hole was 1/8" shy of being able to insert and the motor would have had to go just a hair clockwise to get it into place (this could not be achieved because of the pinned camshaft was holding the rotation back. So this is when I removed the belt, turned the pressure pump sprocket 1/8", inserted its pin and then moved the crank the last weee bit to insert its retainer. After installing the belt I turned the motor over two complete revolutions, readjusted the tensioner and all marks lined up. Only other thing I can think of is the fuel filter spent the entire time upside down in the engine compartment, could it have gotten some air in it? And I do not have access to a VCDS, is this something I can easily buy and set up?

 

[Wilkins]

To answer one question, yes I think it possible that turning the filter upside down somehow allows air into the system. Only reason I say that is it seemed to happen to me. In my case engine refused to start after I had moved the filters for a few days to work on AC piping. I carried out the priming procedure with VCDS and heard a squeak sound. Then engine started immediately and ran normally.
I’m not confident that is your problem since I think once the engine starts all air is purged and gone. Unless air is getting in when engine is not running. Is it possible the suction line from filter to aux pump is letting air in? A bit doubtful but weird.
I’m also wondering if the CP4 isn’t timed right. After the final setting did you rotate the engine 2 revolutions and without further adjustment confirm all pins went back in? Don’t know what symptoms of incorrect adjustment are but hard starting and noise seem plausible.

 

[2004LB7]

sounds like you are off one belt tooth

 

[ghohouston]

While you are supposed to time a high pressure fuel pump, there is absolutely nothing to know whether it not it's timed correctly. That's not your issue. As stated, you're probably off a tooth on something.

 

[jokila]

To answer one question, yes I think it possible that turning the filter upside down somehow allows air into the system. Only reason I say that is it seemed to happen to me. In my case engine refused to start after I had moved the filters for a few days to work on AC piping. I carried out the priming procedure with VCDS and heard a squeak sound. Then engine started immediately and ran normally.
I’m not confident that is your problem since I think once the engine starts all air is purged and gone. Unless air is getting in when engine is not running. Is it possible the suction line from filter to aux pump is letting air in? A bit doubtful but weird.
I’m also wondering if the CP4 isn’t timed right. After the final setting did you rotate the engine 2 revolutions and without further adjustment confirm all pins went back in? Don’t know what symptoms of incorrect adjustment are but hard starting and noise seem plausible.

Flipping the filter over is not going to cause that unless he disconnected the lines.

 

[jokila]

I concur you are probably off a tooth.. I would scan with VCDS to see if you have any codes about the cam sensor. i have seen where the timing became undone from a serpentine belt get wrapped in the crank balancer pulley. The engine would run, then randomly stop running all due to a cam to crank alignment being off.

The real solution is to verify and retime the system. You start with getting the crank to TDC first. That is paramount. You pin the cam and fuel pump in their TDC positions. The sprockets being loose helps you get the belt around them easier.

 

[Wilkins]

Flipping the filter over is not going to cause that unless he disconnected the lines.

If it hadn’t happened to me I would agree with you

 

[cut'em]

was one tooth off as mentioned above.. Thanks for all the replies... Greatly appreciated : )

 

[oldsoul]

was one tooth off as mentioned above.. Thanks for all the replies... Greatly appreciated : )

I'm having the same issue. You're first two posts are nearly exactly what I experienced. How were you able to determine what was off, and what direction it needed to rotate? I've gone thorough it again and everything seems right, but it has not fixed the problem for me.
I know this is an old thread, any insight would be appreciated.

 

[AndyBees]

The OP has not visited the TDI Club since he posted on December 6, 2022 (Post #9 right above yours).

 

[oldsoul]

Oh, ok. Found a video that answered my question.
Thanks

 

[Kramer]

Oh, ok. Found a video that answered my question.
Thanks

Care to share a link?