98 a6 2.8 qttro
replaced a cylinder head and have replaced the entire timing belt assembly with all new parts. I have spun off the cam gears (gear puller) and centered the tension however the timing belt keeps moving forward off the cam gears about 1/4 inch when hand turned for testing. I see burn marks in the timing covers so I know this will tear up the belt so no sense putting it all back toghether.
( I drove it a short time after i put in all new parts due to a bad thermo. I had a bad misfire and thought i was off on the timing only to trace it to a bent valve in the #6 cylinder.)
what gives?
thanks for any help,
stumped in Denver.

 

teste

 

Could you give a better description of what you mean by "moveing forward off the cam gears"? The timing belt is a toothed belt. Is it skipping a tooth? Or, are the cam gears not coming back into alignment with the timing marks? I noticed you said you "centered the tension" but the tension isn't supposed to be centered. The driver's side of the belt should be tight andtThe passenger side, where the tensioner is, should have all the slack when everything is lined up. Are you using a cam bar to hold the cam gears in place while you put on the belt?

Bob