Join Date: Apr 2000
Location: Almelo, Netherlands
thanks steve R and Scotty dog for your quick reply. The engine has a 750 cfm Edelbrock carb. I checked the timing it was almost 10 degree advance, I also readjusted the rocker arms two times, no change. I measured the pressure in each cylinder this also didn't indicate any problem there. What is the power valve in the carb exactly. Does back firing automatically mean that one (or more) intake valve(s) is (are) not closing completely, or can the fire be triggered by something else than the fire in the cylinder during combustion?? (in other words can a back fire excist when all the valves are closing correctly).