2001 A6 4.2L

Multiple misfire codes on bank 1(1-4), P0300, P0301, P0302, P0303

recently did the following:
repair/replace vacuum hoses
valve cover gaskets
cam chain tensioner on bank 2 (5-8)


timing was on the money before and after tensioner was replaced. after replacement, a cam position code came up on the side that was replaced and we realized the chain was off one tooth. adjusted the chain and it fixed that code and then the misfire codes started.

after testing the compression we found that 1-4 were making 120 and bank 5-8 were making 150. so i don't think the valves are bent, otherwise comp would be 0, right?

I'm assuming its the timing belt problem and I'll need to re-do it but I'm interested in your opinions. any help would be appreciated.

 

Sounds like you are off a bit on your timing. Time to redo it. This time, take your time and time it right.