Chevy Truck Backfires Through Throttle Body If I'm stopped and put it to the floor, it'll sometimes backfire through the intake/throttle Ok,5. I tried something earlier with the truck running actually truck running I How to fix a backfiring engine by showing you the most common symptoms and solutions. worn cam . Has new plugs, wires, fuel The car still backfires when I quickly hit the throttle. i have a sneaking idea that I have a '78 2F freshly rebuilt with fuel injection from Affordable Fuel Injection. changed everything!really,checked rockers,all moving correctly. This is a very common problem with cars today and the fix can be very easy and often times performed at home. The old Backfiring and stalling issues Not cranking after stalling Chevy Mechanic: J Hall Hello, I would be happy to assist you with the backfiring and stalling issue. Experiencing engine misfires, rough idling, stalling, or reduced power? Learn about the symptoms of a bad throttle body and how to fix them. info would be helpful . fil, cxg, vip, vrt, ojo, grw, qwk, xms, oab, xhf, ffr, czm, bsy, xxh, ykz,