Motorcraft 2150 accelerator pump question
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Posting Guru
Joined: Sep 2009
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From: Suburbs of Chicago
Motorcraft 2150 accelerator pump question
Hey FTE,
I'm rebuilding my carburetor at the moment (for my 1978 400 M/T F250), and when I checked the sheet for the specs of the accelerator pump overtravel lever and it confuses me. This is what the sheet says in the carb kit
78 351" M F100.........49S M/T.........POL: 3.......CHOKE SETTING: INDEX
351" M F150/250...CAL M/T.........POL: 4...............................INDEX
351" M F350.........CAL M/T.........POL: 4...............................2-RICH
400" F150/250......CAL A/T..........POL: 3...............................INDEX
Heres the confusing part: when I pulled the carb, the pump overtravel lever was in the "4" position, and the auto choke was set in the "2 RICH" which is what it says on the valve covers. Should I tune my carb to the 351M F350 settings?
What do you have yours in if you have a '78 400 manual? Is mine different because it was made in Canada?
I searched the forum and didn't find a definitive answer, but if you can find one, please give me the link
I'm rebuilding my carburetor at the moment (for my 1978 400 M/T F250), and when I checked the sheet for the specs of the accelerator pump overtravel lever and it confuses me. This is what the sheet says in the carb kit
78 351" M F100.........49S M/T.........POL: 3.......CHOKE SETTING: INDEX
351" M F150/250...CAL M/T.........POL: 4...............................INDEX
351" M F350.........CAL M/T.........POL: 4...............................2-RICH
400" F150/250......CAL A/T..........POL: 3...............................INDEX
Heres the confusing part: when I pulled the carb, the pump overtravel lever was in the "4" position, and the auto choke was set in the "2 RICH" which is what it says on the valve covers. Should I tune my carb to the 351M F350 settings?
What do you have yours in if you have a '78 400 manual? Is mine different because it was made in Canada?
I searched the forum and didn't find a definitive answer, but if you can find one, please give me the link
Last edited by wyckedcombo17; Oct 25, 2010 at 10:22 PM. Reason: typo
Laughing Gas
Joined: Oct 2009
Posts: 874
Likes: 56
From: Merlin, OR
We have the same exact carb. The accelerator pump on mine is dripping fuel onto the intake manifold, debating on whether to do a rebuild, or to repair just the pump. I'm not sure what mine is set on right now, I can go take a look at it tomorrow, but I don't know a lot about carbs.
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Posting Guru
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Laughing Gas
Joined: Oct 2009
Posts: 874
Likes: 56
From: Merlin, OR
Mine is in the number 4 position. Can't tell about the rich setting. I'd just go with what's on the valve cover tag.
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