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79 f100 custom 302

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Old 06-12-2015, 01:48 PM
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79 f100 custom 302

My carb spits out gas even when I plug of gas line rebuilt carb and it's doing the same thing
 
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Old 06-12-2015, 02:21 PM
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Hmm.. broken syntax. Please edit and correct what yer trying to state or ask.


Stock carb?


Do you mean that fuel is shooting out the vent tube? if so that usually means the needle isn't seating and/or the float is hung up.


The Great Orich pointed out that most guys will rebuild the carb and then forget to clip the needle or don't install the float spring correctly. Open 'er up.


After correcting, avoid inverting the carb because that can cause the float to hang up.
 
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Old 06-12-2015, 02:34 PM
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Gas is spitting out the top of the card were the throttle plate is
 
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Old 06-12-2015, 02:58 PM
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The throttle plate is at the bottom of the carburetor ... but if you're getting sputtering or backfiring out the top, it's possible your firing order/spark timing is way off, or that you're extremely lean. Does it fire if you give it a squirt of starting fluid?
 
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Old 06-12-2015, 03:22 PM
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There's to much gas coming out the top don't feel comfortable spraying starter fluid in there to can u think of anything else
 
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Old 06-12-2015, 04:02 PM
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Gas spitting out top of carb we're the choke plate is
 
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Old 06-12-2015, 06:49 PM
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That's a new one to me.. is the gasket pinched and gas pouring into the top of the carbs throat between the body and lid?
 
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Old 06-12-2015, 07:47 PM
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U think its out of ignition time or timing chain
 
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Old 06-12-2015, 08:45 PM
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I think you should figure out the gas issue first
 
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Old 06-12-2015, 08:50 PM
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Trying to need some help
 
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Old 06-12-2015, 09:33 PM
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I only saw gas spew out a carb once in my lifetime. My 79' with a 429 CJ needed a new gas tank, and while it was out I decided to drop the fuel line into a five gallon gas can. The truck started, then flooded out spewing literally cup fills of gas right out of the carb. I put a rag around the fuel line going into the gas can, half assed creating a seal and it solved the problem.

With this said, I know it's an oddity. Not sure exactly what caused it, but maybe it can lend a clue for what's wrong in your situation.
 
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Old 06-12-2015, 11:54 PM
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Could it be just a stuck float, making it come out the bowl vent?


Little hard to decipher broken sentences to help when you're not sure what the problem being asked is, but a stuck float is my guess thus far. Good luck on the fix OP.
 
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Old 06-13-2015, 12:49 AM
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For some reason there are two of these threads.. In the other one I had also mentioned a stuck float, or the oring under the needle seat may be seat missing..
 
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Old 06-13-2015, 01:13 PM
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OK, if it's pouring liquid gas out the top, that's not a timing issue. I was thinking you were describing a "sputtering" or intake backfire, which can involve a little fuel mist splashing back up, but now it sounds more like your carb bowls are overflowing out the vent tubes or something? That could be a float/needle valve issue as James and blue04.5 suggest...

If you give us a clearer description of what's going on (in complete sentences, with details of the whole story, not just snippets), we may be better able to understand and help you out. Pictures or a video can help too, if it's hard to describe.
 
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Old 06-13-2015, 01:31 PM
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Spitting like mist out the top
 


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