Ok so after weeks of reading about what to do about my mis-firing problem I decided to re-set the timing on the crank and cam shaft after it had slipped a belt. Me and a buddy of mine ripped into it one morning and got it all back together to find it to run better. The problem is I still have a ECU for random misfires throughout all cylinders. Now if I go beyond 3500 rpms my check engine light gets brighter as I climb the rpms. I hooked a timing gun up to it last week and notice something odd. At first when we hooked up the timing gun the #1 cylinder was firing as the same time the crankshaft was lined up with the markings on the block. But after a couple seconds it would begin firing at a different time. This brought me to the conclusion of maybe my tensinor is loose?? I have no idea but would like to get this problem fixed before it detonates.

 

Your jumping teeth--get a new spring on your tensioner or make sure that bolt is actually tightened up--easy thing to forget when reinstalling

 

Alright I'll go home an tear it apart and double check everything cause I know that we had it on TDC. If its not the spring or the tensinor then what could it be??


Modified by 96 EX at 8:02 AM 9/30/2008

 

How new is the belt? and which cylinder are you putting at top dead center when you put it all back together--the fact that the timing changes leads me to believe that you're jumping teeth, do a compression check as well, always a good thing to do to eliminate certain possibilities.