V6 TDI: Performance Issues After Camshaft Replacement

Hello everyone,

After I replaced the camshafts on my V6 TDI (more about that here: http://www.passat3b.de/phpBB2/viewtopic.php?t=24537&highlight=), it's now experiencing performance issues. Specifically, it can only reach 200 km/h, and it takes a very long time to reach that speed. With the "broken" camshafts, it ran without problems, reaching 230-240 km/h according to the speedometer. What could be the cause? I made sure the timing belt was correctly aligned, with the camshafts, pump, and crankshaft properly synchronized, and then I tensioned the belt, following the repair manual. The only thing I haven't done is adjust the fuel injection pump. The diagnostic tool shows 0° advance, while the target value according to Audi is 2° retard, plus or minus 2°. Could this make such a difference, or where is the problem? I'm grateful for any advice.

Regards,
Al.

Hello,

If the belt settings are correct, then the only thing left to check is the ESP (Electronic Stability Program).
Regarding VP44 injectors that are not properly calibrated, yes, that can make a significant difference, and they should be calibrated correctly.