ENGINE BOGS DOWN WHEN I GIVE IT GAS.

1991 Ford F-250

Tiny

clifselina

May, 15, 2012 AT 11:49 PM

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?

FOUND 16219 RELATED QUESTIONS

6 Answers

Tiny

clifselina

May, 16, 2012 AT 12:02 AM

Sorry, it appears to be soot filled condensation, my hands smelled of fuel.

Tiny

fixitmr

May, 16, 2012 AT 12:03 AM

5.0?

Tiny

fixitmr

May, 16, 2012 AT 12:04 AM

When did this start happening?

Tiny

clifselina

May, 16, 2012 AT 12:05 AM

460. I think 7.5

Tiny

clifselina

May, 16, 2012 AT 12:08 AM

Just today. I am in a bind, as this is my only vehicle.

Tiny

fixitmr

May, 16, 2012 AT 5:33 AM

Check MAP/MAF sensor.

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