acceleration problmes here
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New User
Joined: Nov 2005
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acceleration problmes here
Hey im new here but not sure where to post this but here it goes
I have a 1979 ford f-250 400ci 3speed automatic and it takes along time to accelerate, the fuel pump makes alot of noise, it sounds like its trying to pump rocks, but going uphill it acts fine but when you level out it acts up again if anyone can help me here? thanks
I have a 1979 ford f-250 400ci 3speed automatic and it takes along time to accelerate, the fuel pump makes alot of noise, it sounds like its trying to pump rocks, but going uphill it acts fine but when you level out it acts up again if anyone can help me here? thanks
Senior User
Joined: Jun 2003
Posts: 286
Likes: 1
From: Ousley, GA
Is your motor getting up the rpms and not shifting or is the motor not getting up the rpms? If it's getting the rpms you may want to check the vacuum modulator at the tranny. May be a clogged fuel filter causing the fuel pump issues.
Laughing Gas
Joined: Mar 2004
Posts: 1,243
Likes: 0
From: Maple Ridge B.C. Canada
i would do a complete tune up,cap ,rotor,plug wires,air filter,plugs, also check your float setting on your carb.change the fuel filter,blow out the fuel lines,set the timing,pressure test the fuel pump,then if you still lack power,check engine compression,you may just have a tired old engine.you didnt say if you just suddenly lost power,or if this is a consistant complaint since day one with the truck.if you have better performancegoing up hill, i would focus on the carb,it may need a rebuild.hope this helps you. OH,by the way WELCOME TO FTE!!!-billy
New User
Joined: Jan 2008
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That's sounds more like pre-ignition caused by the ignition Timing being off.
You can try a higher octane fuel or at least fuel you know is of good quality (used found at busy Gas Stations) gasoline.
Check the timing of the engine in all modes.
Check the vacuum advance for being seized or leaking.
You can try a higher octane fuel or at least fuel you know is of good quality (used found at busy Gas Stations) gasoline.
Check the timing of the engine in all modes.
Check the vacuum advance for being seized or leaking.
