4/5/2024 0 Comments 4.3 vortec engine problems![]() Had " check engine soon" come on, I replaced the EVC Selonoid on top fo engine and cleaned the MAS and new air cleaner (old one was not that bad), Just that crazy start problem, but starts fine after sitting all night or all week-end, just has problem after it runs a few miles and you get back in to start it and it just cranks. Most point to the Spider fuel injections system, meaning the fuel regulator common problem, but don't know if it has been replaced or not, probably not. Just a starting problem, which is pretty common on these 4.3 Vortec engines from what I read. has been replaced, not sure when or if the plugs and wires have been replaced, but seems to run good. It runs fine on the road, idles fine, no missing or rough idle, shifts great. Pretty sure the fuel pump as benn replaced recently as I just bought it recently. ![]() ![]() Start fine if sitting for a few days, even on cold mornings, but after driving it for a few miles and letting it sit for a while, it seems to not want to start, cranks, but like no fire or maybe a fuel problem. I have a 2000 GMC Jimmy with 129K on it, 4.3 Vortec engine.
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