77 400M bogs bad
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Junior User
Joined: Sep 2000
Posts: 53
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From: Burlington,IA
77 400M bogs bad
I bought a 77 F150 with a 400M/c6. It runs alright, but if I give it more than about half throttle it bogs bad. It has a 2bl carb. I know nothing when it comes to carburetors. Does it need to be adjusted, or do I have another problem somewhere else?
68 F-100 Short bed 2wd
302 C4 9" w/3.50 gears
Soon to be sportin' power discs and steering
68 F-100 Short bed 2wd
302 C4 9" w/3.50 gears
Soon to be sportin' power discs and steering
Posting Guru
Joined: Sep 1999
Posts: 2,297
Likes: 1
From: Indiana
77 400M bogs bad
Barring anything exotic, it sounds like a classic accelerator pump failure in the carburetor. These Motorcraft 2bbl's are pretty simple to service.
Superdave
94 Ford Aerostar XL 3.0L
82 Ford F250 4x4 XLT,400 CID,C-6 A/T,8700lb GVWR. Black & Silver
Superdave
94 Ford Aerostar XL 3.0L
82 Ford F250 4x4 XLT,400 CID,C-6 A/T,8700lb GVWR. Black & Silver
More Turbo
Joined: Jan 2001
Posts: 574
Likes: 0
From: New England
77 400M bogs bad
I had the same problem, I took the carb apart , soaked it for a day in solvent, the put a kit ($20) in it. it worked, I could smoke the tires down with 2.75 gears:}
https://www.ford-trucks.com/dcforum/User_files/3a9df0394b631ce6.gif
77'FORD F150 XLT 400
https://www.ford-trucks.com/dcforum/User_files/3a9df0394b631ce6.gif
77'FORD F150 XLT 400
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