When you let up fast on the gas pedal(after a high rpm)it lets out a loud back fire. when you let up slowly ,you just get an pollution system noise. The truck has exhaust manifold leak could this be the problem, or is the pollution sytem. thank you for any hel...

FIX posted 11/16/1998

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle