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Problem Finding Tdc


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Posted

Hi guys. Have not posted in a while. I have a 1998 Silverado with 5.7L Vortec. I can't remember the proper procedure for finding TDC on the #1 Cylinder in order to check that my distributor is installed correctly. My timing shows an average of 20 degrees and up (can't be right) Could someone help me with this. Thanks all.

Posted

Unplug the coil and pull the number 1 plug out. Bump the starter until your balancer is close to 0 degrees or TDC, then I usually have an assistant handy to rotate the crank while I hold a dowel rod in the cylinder. The rod should reach max travel when the harmonic balancer is showing 0 at the timing marks.

--Mike

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