Question about 2000 Chevrolet Blazer
4.3 liter engine with port fuel injection unit nickname(the spider) if you try to look one up will cause this problem and it hassince 1995 when it first came out.I was on the North american research team (eastern seaboard) group with AC Delco to try to solve this problem.There was 3 different things causing this #1 poppet in 1 or 2 cylinders sticking open slightly during shut down and making that cylinder load slightly with gas which has to burn off on start up.next was the pressure regulator inside plenum leaking and loading a couple of the cylinders. This is the most likly cause.
Posted on Jul 05, 2010
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Posted on Jan 02, 2017
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