chevyonly1963
Newbie
Its a 1998 1500 99,800 miles. I have replaced intake gaskets (upper and lower plenum) updated the injectors to mfi, replaced every thing I can replace on the intake. Coil, ign module, distributor/button/cap, map sensor, oil pressure switch (while it was easy to get to), plugs, has Napa belden wires that are 3 years old, Fuel filter has been replaced. All of this work has been done within two weeks. Fuel pressure is good. It feels like it's bogging a little bit and check engine light is always p0300 random misfire. Please help, I have replaced everything except the fuel pump, egr valve, and crank position sensor. I'm tired of throwing money at it. Thanks in advance!
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