Fuel mileage on 1980 F100 with 4.9 six-cylinder
#1
Fuel mileage on 1980 F100 with 4.9 six-cylinder
I have a 1980 F100 with the 4.9-liter six-cylinder engine (one-barrel carburetor) and automatic transmission. It runs great, but gets only 11 miles per gallon, even in highway driving. Is this typical? I'd appreciate hearing any thoughts or suggestions.
Thanks!
Thanks!
#2
Check the carb. They have a tendency to blow the accelerator pump, and or the base loosens up from the bowl. My best advice is to rebuild the carb, check vacuum leaks(especially the intake to cylinder head gasket). Also verify ignition timing(8 degrees BTDC). Check the plugs. I had an 86 that when it started to lose mileage, it was time for plugs. Hope this helps some.
Robbie
Robbie
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