Originally Posted by tommyboy8072002
HI I have a 1996 Chevy C3500 5.7 manual transmission. I let the truck sit for 4 to 5 months to have my transmission rebuilt. Drove the truck for the first time after all of the work was done. Broke down and was running like crap so I changed the following Plugs, wires , rotor , cap , fuel flitter Ignition control module and coil ... I also put fuel treatment in the gas tank and went with high octane with non ethanol fuel. Still not running right bucking and jerking when under a load. with high rpms runs fine. I don't understand ran fine the day I parked it
What kind of plugs did you put in it? What did you gap them at? If the motor has alot of miles (100k+) I would put platinum plugs in it.