Little blue
Newbie
I have a 93 Chevy with the 4.3 and am have fuel problems. The truck is running super rich at times if it hit the gas too hard it will blow black smoke or stall and makes hardly any power when the motor is hot. All 6 have 175psi compression, head gaskets are new and good, tps is working properly, has new map sensor, new o2 sensor, has new distributor, plugs, wires, and coil. When it’s cold started it only runs on maybe 3 cylinders for about a minute. I also pulled plugs and 3,4,6 were wet with fuel the others were fine. I also scoped those cylinders and they had a lot more carbon in them. If anyone has any ideas it’s greatly appreciated. I also checked and I have good hot spark on all cylinders.
Last edited:
