I replaced the fuel pump, spark plugs and took the plenum off, and then replaced the gasket and started driving my baby again. When I step on the gas real hard it boggs and if I step on it light it drives pretty good. IT almost stumbles and sounds like it putting along , when it starts instead of a nice spoooling sound . I want to know , how do you know if its a waste gate problem or a leaky valve line or what ......help
