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help! resetting rb20det timing


gibbon

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Hi everyone, i think ive buggered up my timing after changing my waterpump - everything was lined up, but after turning the engine over by hand a few times, my marks on the cambelt are no longer lining up with the marks on the cam gears. at first everything was lined up, then after one full rotation they were all out by about 3 teeth, then 6 teeth etc. The change is constant across both cam gears... Its the same belt that came off in the first place (not even 1000ks on it).

 

So what I'm wondering is - should the alignment marks always line up after every rotation, or will it actually change over time (ie are the alignment marks only relevant for the time when you are actually replacing the belt)

 

If its supposed to line up every time, what might I have done wrong? skipped a tooth somewhere perhaps? and more importantly, how do I reset the timing? Fortunatley it's not an interference motor as far as I can tell. I can set the crank pulley to TDC< but I'm unsure as to if there are any alignment marks on the cam pulleys, where tehy are, and where they shoul dbe when the engine is at #1 TDC

 

in short, HELP!

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Those marks are only there for the alignment and will not line back up again unless you turn it over enough to to work the marks back to orginal place. In short if they lined up the first time and then your on the money.

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  • 4 weeks later...

If you crank it over by battery you will probably miss the mark. Put a 27 mm socket on the crank pulley and do it by hand....it takes quit a few cranks to get it to line up again.......but it will.

 

ok thanks guys. i'm just waiting for my battery to charge then i'll try cranking her over. exciting times!

 

 

 

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