ok first off their is NO chain in our chevyL6s they are gear drive. A burnt Valve will also make for a back pop in the intake system. The accelerate will make for a Dead/flat spot It will ALSO Be Very hard to start the motor Seening That It can Not Preprime the intake. when the motor has sat for a long time period.(like over nite)
Other quetsion I have Does the motor pop Even If not under a load?? Or only under a load. Does It still have points in it. A Weak condenser will also cause for back popping the intake/carb. hope this helps }[oooooo]
God doesn't like ugly.
