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james0569
New User
May 6, 2012, 9:32 PM
Post #1 of 5
(495 views)
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1978 ford f/150 4wd
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My F150 has a 4.7 in it 306 cylinder. with a four wheel drive. when ever i step on the accelerator, the truck boggs down and does not wanna go. if i let up off the accelerator a little bit the truck takes off. When I shift it through the gears and I get in to 4th gear I go to acclerate the truck just bogs down and doesnt wanna run at all untill i let up off the foot feed a little bit and then I have to butterfly the foot feed to get the truck to acclerate. I was wondering if this was a fuel pump issue seeing that the fuel pump has never been changed and there are no fuel filters betweent the fuel pump and the single bearer carborator. Or could it be the choke is sticking cause it has an automatic choke on it. any help would be greatly appreciated thank you. The truck has 117k acutal miles.
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Hammer Time
Ultimate Carjunky
/ Moderator
May 6, 2012, 9:54 PM
Post #2 of 5
(460 views)
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I would suspect the ignition coil
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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james0569
New User
May 6, 2012, 10:07 PM
Post #3 of 5
(449 views)
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ty very much I will check in to that tommorrow morning. thanks alot for the quick response.
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Hammer Time
Ultimate Carjunky
/ Moderator
May 6, 2012, 10:09 PM
Post #4 of 5
(445 views)
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Check the coil wire also. That can act ther same way.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 8, 2012, 11:16 AM
Post #5 of 5
(376 views)
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Somewhat familiar with these. Clean, clean, clean helps. Not great carbs for the year. That and everything HT mentioned.
Good trucks IMO.
Story: was plowing 22 driveways with a farm tractor when Blizzard of 78 came thru. OMG - lost and a guy stopped by with exactly a 1978 F-250 and it beat the hell of of that thing pushing heavy, wet 3-4 foot snow! No go at first and got 4 wheels of chains which did work. Still nasty hard on a brand new truck!
Good luck with the fix,
Tom
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Long retired now
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