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I have a 2003 VW Jetta TDI (ALH) with a 5-speed and 70,000 miles. The ECU chip software has been upgraded with the Unitronic Stage 2, and modifications include DG (Dieselgeek) race pipe and EGR cooler delete, DG short shifter, and DG by-pass filter.

This weekend I changed my timing belt and components using both the myturbodiesel.com and TDI Club directions for the A4. I studied the directions and the Cincy TDI Club video several times, and I’m pretty confident that I performed the timing belt and component change accurately.

Today I finished up and started the car with no problem. Using the accelerator at 2500 rpm I let the coolant heat up to 190°F, plugged in the VAG-COM HEX-USB, and started up the program. I followed the directions at http://www.ross-tech.com/vag-scope/TDIGraph.html to check the timing, including using Golf AGR/AHF/ALH/ASV 4.99>.

· Start your engine

· Start VAG-COM

· Click [Select]

· Click [01-Engine]

· Click [Meas. Blocks - 08]

· Go to group 000

· Click [Switch to Basic Settings]

· Click [TDI Timing]

· Select your engine code from the drop-down menu

When I checked the TDI graph it indicated that I was retarded, and my block 2 reading was something like 10. In fact, it was so retarded that the graph showed I was far, far below the lower red specification line. The problem I’m having is that I have advanced the injection pump clock-wise as far as it will physically go. I simply cannot turn the injection pump any further clock-wise. Again, the car will start, but the timing is very retarded. I can’t advance the timing any further, and I don’t know what to do. I tried turning the injection pump counter-clockwise, but then the car simply will not start. I also took all 3 bolts out, turn the injection pump clock-wise to the other set of oval holes, but discovered that the holes don’t line up to allow the bolts to go into the pump, so I when back to the original position. When I went back to the original position, torqued the bolts at the most clock-wise position, I got the same retarded results.

Currently, the car is up on jack stands in the front, so it’s tilted upwards. I’m not sure if this would have any adverse affect on the timing, and I guess I’ll check this tomorrow night. I hope someone can help me because I’m at a loss as to what to do.

I just took the car off of the jack stands, which did not help (still retarded and below red specification line).

Thanks for any assistance.
 
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