My 2001 Passat 1.8T brook the time belt and bent some valves. I had take the head cylinder out from my passat and bring it to shop machine Napa. They had fixed every thing for me, replacing valves etc. I received it like a new and fit it on my car again, including all new gaskets, new timing belt and water pump.
The timing belt pulley is the point aligned with head camshaft. All electrical are plugged right and the engine turns fine. Just do not starts. Also I had moved timing belt some tooth’s (2) to front and to back. Ps* (When I moved it a little to front, it started, but working bad, and check engine light flashing. Can help me???
Sometimes you must install the timing cover temporarily with the crank pulley to ensure you are at true Top Dead Center line up the notch on the pulley with the pointer on the timing belt cover or pointer on crankshaft cover I had a problem with a dual cam Honda in which the marks on the engine block where slightly off. you must ensure that both intake valves and exhaust valves are shut one cylinder #1 by turning the cams in the appropriate direction, from your description of the situation it sounds like when it runs poorley it is off by one tooth, when you move forward a tooth it runs but poorly make sure you are moving both cams if equipped with dual cam, both cams should be in the exact same visual location in other words all valves completly shut, be careful not to move lower shaft after lining up the crank pulley to cover pointer marks, after resetting turn the engine over two full turns then recheck all markers.
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