Question about 1999 Chevrolet Silverado 1500

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Replace both heads in truck and timing is off cant get it back

Replace both heads in my 1998 Chevy K1500 Z71 truck. back togeather. set motor at top dead center and disibuter and TDC and truck is out of time. nothing I do can get it back in time

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Pull the spark plug and bump the engine /stick your finger in the sparkplug hole when you feel air rush out the hole that's tdc on compression stroke ./all the old chev v8's mostly have the rotor pointing at #1 piston when installed.if you get it close and the dist doesnt drop down the last little bit to engage the oil shaft just apply light pressure on it and bump the engine , it will fall into place when it lines up .you should have marks on the dist telling you where #1 is.

Posted on Feb 04, 2010

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TDC on the crank happens twice per cycle, but, one is 180 degrees from where you need to be. If you still have the valve covers off, watch the #1 intake valve rocker. while turning the engine by hand, wait for it to open, then close, then watch the timing mark and align it with the reference. Don't forget that the rotor shaft turns a bit as the distributor is lowered and that it needs to also engage the oil pump.

Posted on Feb 02, 2010


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