1993 GMC Sierra 1500 350 Engine!!! Timing!! - Chevrolet Forum - Chevy Enthusiasts Forums

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Old 06-15-2010, 07:24 PM
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Default 1993 GMC Sierra 1500 350 Engine!!! Timing!!

Problem: Trying to set timing! Timing was already off. So I asked a friend to walk me through the steps and I am still having problems. Ok so first off I set the timing mark thats on the crank to the first mark on the clip that conects to the timing chain cover. So im guessing thats negative 1 degree. then I started it and steped on the gas to drive it and it starts to bog down. I parked it and I see that it advanced timing alot???? Is there a timing advancer on these trucks? Like a vacum hose or chip to pull out and set the timing then reconect it?

Last edited by Robertv34; 06-15-2010 at 07:26 PM.
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Old 06-17-2010, 05:51 PM
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Location: texas
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Ther is a wire you have to disconect to set the base timing, im not sure which one though, It will specify in a manual if you have one.
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