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  1. Benji

    93 gmc Sierra 1500 4.3 vortec misfiring after warmed up

    So I replaced my intake manifold gasket on my 93 4.3 vortec, after doing so it started to run really weird once it’s warmed up, when I first start it it’ll run completely normal until it’s warm and I start driving. Then it will start misfiring so bad. I timed the distributor to 0 degrees at 750...
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