Thread: bad compression
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  #14  
Old 10-06-2006, 11:33 PM
Matt L Matt L is offline
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Join Date: Oct 2005
Posts: 4,263
Quote:
Originally Posted by Sierra240d View Post
I don' t understand

thanks for the comment Matt, I agree... I think I will be able to hear it. I was going to try today but got rained out. Is tdc for number 1 the same position that you check the timing at on a w116... I have yet to get a manuall for this car.

Oh... I think I just got it... do you mean if it is not a TDC it will ast like the cylinder is running and force it self to TDC once air is induced?
If it's not *exactly* at TDC when you introduce compressed air, the force will turn the crank, pushing the piston toward BDC.

If there's a TDC mark in your balancer, that should be for piston #1 (and presumably #4), assuming that the mark is accurate. You'll know pretty quickly if it's not, so stay out of the way.
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