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problems on my 2001 v6 4.3l vortec

backfire

problems on my 2001 v6 4.3l vortec

Postby silverado nation [OP] » Feb 19 2014, 7:57am

I need help with my 2001 silverado 1500 2wd 4.3l vortec.... I just took the heads and intake manifold of it I wanted to reaseal everything since I had a leak in my heads with coolant but now that I fired it up it is backfireing once I put it on drive or any gear it starts to shake really bad and the exhaust starts starts to make poping noises.. I thought it was my timing that was bad then I put my #1 cylinder in combustion and then rotated my crakshaft so it could be at top dead center and I put my distributor at right timing and its still doing the same thing I need help please
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silverado nation
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Joined: Feb 15 2014, 6:53pm
Location: new mexico
Year: 2001
Make/Model: Chevrolet Silverado
Extra Info: 4.3l vortec 2wd
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