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post #1 of 5 (permalink) Old 09-26-03, 04:40 AM
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Rebuilt Carb

I rebuilt the carb (motocraft 2150 2bbl) on my 77 F150. Everything seems fine until I press on the accelerator. I get gas that comes up the two ports on top of the housing. This is the first time I've rebuilt one, so I'm not sure what is going on here. I've taken it apart 2 times since looking for some error that I've made, but I can't seem to find any. I've used new gaskets and all that. Should I use some silicone gasket sealer around the gasket also? Or have I lost a part that I'm not aware of. I'm not real sure what these ports do. They are hollow, but don't really seem to go anywhere. If anyone knows what I'm talking about, or what could be the problem, I could really use some help here. LOL I need to get this back together before tomarrow so I can get to work.

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post #2 of 5 (permalink) Old 09-26-03, 08:39 AM
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Re: Rebuilt Carb

Ok Guys n Gals.

I fingered this one out. It turns out that I forgot the hold down spring for the float, so my needle valve was constantly open. After reconnecting no more flooding. Anyway I'm happy now. And man that rebuild done my 77 some good.

Is there a pretty good site for tuning a motorcraft 2150 carb? You know like carbsfordummies or something. Also, I got a little blue smoke coming from my exhaust now, and a faint fuel smell. I think it's in my fuel/air mix (to rich?) but I'm not sure. Any pointers would be useful. Thanks!

post #3 of 5 (permalink) Old 09-26-03, 08:45 PM
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Re: Rebuilt Carb

This may not be too much help but...

blue smoke usually means oil consumption, black smoke is excessive fuel
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post #4 of 5 (permalink) Old 09-28-03, 05:40 AM
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Re: Rebuilt Carb

Thanks man!
post #5 of 5 (permalink) Old 09-28-03, 03:42 PM
97 F-150 XL 4x4
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Join Date: Jun 2003
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Re: Rebuilt Carb

if you are smelling raw fuel it is because of a rich condition and you will have to tighten down the idle mix screws just a little but the best way to do it is use a tach and vacuum gauge and then turn in the screw until you get about a 20 rpm drop and then back off just a little.

i would rather push my Ford than drive your Chevy !
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