On my 1978 F150 with a 300 six cylinder 4x4 has a problem accelerating up hills. We finally got it running and it runs great when its level ground but when we stop at a stop sign and go up a hill we have it to the floor and i cant get over 20 miles per hour up a 30 to 45 degree slope. if you could help me out it would be great, thanks.
joseph

 

Check your cats, that's the simplest thing I know of that could cause that problem.


1988 F-150, SWB, 5.0 EFI (formerly 4.9 EFI), M5OD 5 speed, 3.08 gears, Summit shorty truck headers, Custom built Flowmaster exhaust system. Force 4 LP6000 lightbar, Federal signal PA-300 100 watt siren, Icom IC-V100 50 watt mobile radio.
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1965 F-100 (just purchased 1/18/01), SWB, 390, C-6 auto. Dual exhaust, Not much else to do to it.

Can see both below.

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