TAPPING INTO THE MECHANIC KNOWLEDGE BASE. TRUCK RUNS SMOOTHLY AT LOW RPM. AS I ADD MORE THROTTLE, THE ENGINE BOGS DOWN BIG TIME. I CHECKED THE FUEL PUMP AND IT APPEARS TO BE PUMPING PLENTY OF FUEL. I CHANGED THE FUEL FILTER. I OBSERVED THE EXHAUST PI
1991 Ford F-250 • 10,000 miles
Tapping into the mechanic knowledge base. Truck runs smoothly at low RPM. As I add more throttle, the engine bogs down big time. I checked the fuel pump and it appears to be pumping plenty of fuel. I changed the fuel filter. I observed the exhaust pipe when I had my wife floor the running engine, and it appeared as though there was some unburned fule coming out the exhaust. Any ideas?
May 15, 2012.
May 15, 2012.
Sorry, it appears to be soot filled condensation, my hands smelled of fuel.
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