GAS ISSUE

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Apr 10, 2015 | 12:20 PM

Renee Finn

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GAS ISSUE

I recently inherited my uncles 1973 f250 it has been sitting for 10yrs, it actually started (after normal maintance of course) have some issues, major one is to much gas.. we dropped the tanks cleaned them , replaced all filters, re-built the carb but now gas is overflowing in engine if it back fires it catchs on fire , im at a lose

Apr 10, 2015 | 12:41 PM

gatorfor88

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From: Panama City

Sounds like float is stuck open. That is if gas is actually coming from carb.

Apr 10, 2015 | 06:32 PM

Blue and White

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Again, assuming its the carb, a gentle tap on the float bowl with a hammer may free up the float... but probably time to rebuild the carb or swap a reman carb.

Apr 10, 2015 | 08:42 PM

Jdeshler

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I agree with the guys, the float is likely wide open.. If a sharp tap doesn't fix it, open it back up and make sure you put the o-ring under the needle seat

Apr 10, 2015 | 08:49 PM

Jdeshler

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You can also bend the float downwards(holding the metal part that hinges with needle nose pliers) to lower the gas level, thus pushing harder on the needle valve

Apr 12, 2015 | 03:39 AM

Renee Finn

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thank you I will try it

Apr 13, 2015 | 12:20 AM

wdfp

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From: southeast Idaho

Which carb is it? Except for the common piece of something stuck on the needle valve, different carbs have different ways of doing that..

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Apr 13, 2015 | 12:57 AM

dustyroad

Fleet Mechanic

Joined: Jul 2013

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From: NE Ohio

Quote:

Originally Posted by racejeep1998

My .02 get a nice 600cfm carb and tune that puppy with a wideband o2. The truck cost you nothing, might as well make doimg this easy on yourself. You dont need the extra setup they run. In this link that logs everything. Just a plain lm2or autometer 3041 wideband will be good. Like this Gas Mileage - Carburetor Tuning Techniques - Chevy High Performance

how can you make that CFM recommendation when you don't even know what kind of engine is in their truck. Maybe their carb builder did something wrong and just needs tweaked up a bit and not replaced. Hell it could have been a faulty float.
Another case of spending someone elses money.