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Old Jun 4, 2009 | 05:52 PM
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Default Ruined Carb

I think my carburetor is ruined.. When I put the gas tank on there was a lot of debris that would accumulate in the gas filter so I had to take the retaining nut and gas line out a lot. One of these times I stripped the threads in the carburetor and gas leaks which makes the engine sound horrible and is probably detrimental if ran hard. Sealant has been applied that was supposedly for this problem but there still a leak. Is there anything else that can be done or do I need a new carb? If I do what should I look at?

Last edited by 21boy; Jun 4, 2009 at 06:03 PM.
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Old Jun 4, 2009 | 06:10 PM
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Originally Posted by 21boy
I think my carburetor is ruined.. When I put the gas tank on there was a lot of debris that would accumulate in the gas filter so I had to take the retaining nut and gas line out a lot. One of these times I stripped the threads in the carburetor and gas leaks which makes the engine sound horrible and is probably detrimental if ran hard. Sealant has been applied that was supposedly for this problem but there still a leak. Is there anything else that can be done or do I need a new carb? If I do what should I look at?
Don't know what kind of carb you have but many have a brass or paper filter in where the fuel line connects to it. Make sure that filter is clean.

cc
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Old Jun 4, 2009 | 06:45 PM
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Any carburetor repair shop should be able to fix stripped fuel inlet threads. Just find one in your area.
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Old Jun 4, 2009 | 06:48 PM
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Originally Posted by 21boy
I think my carburetor is ruined.. When I put the gas tank on there was a lot of debris that would accumulate in the gas filter so I had to take the retaining nut and gas line out a lot. One of these times I stripped the threads in the carburetor and gas leaks which makes the engine sound horrible and is probably detrimental if ran hard. Sealant has been applied that was supposedly for this problem but there still a leak. Is there anything else that can be done or do I need a new carb? If I do what should I look at?
Of course a leaking gas line is detrimental to performance. It's hard to see out of the windshield with flames coming out of the hood so you have to slow down. You better fix that problem right away or you will be posting "My Vette burned to the ground".

There are plenty of replacement carbs available. If you have a stock engine something in the 600-650 CFM range is probably all you need. The Vette 350 isn't anything unusual when it comes to carbs. Any 350 Chevy carb will fit the engine.



Rick B.
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Old Jun 4, 2009 | 07:13 PM
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Originally Posted by 72LS1Vette
Of course a leaking gas line is detrimental to performance. It's hard to see out of the windshield with flames coming out of the hood so you have to slow down. You better fix that problem right away or you will be posting "My Vette burned to the ground".

There are plenty of replacement carbs available. If you have a stock engine something in the 600-650 CFM range is probably all you need. The Vette 350 isn't anything unusual when it comes to carbs. Any 350 Chevy carb will fit the engine.



Rick B.

This is a common problem with the quadrajet carb, and It's been a long time, But if my memory still works, I believe there is a kit to repair stripped threads at the fuel line inlet. But never the less, if you remove the carb and send it out to have the stripped threads repaired, there are a number of Carb rebuild shops.
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Old Jun 5, 2009 | 12:30 AM
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There aren't many shops in south western PA that I'm aware of..if any. And they sell a kit from NAPA but the said they don't sell the quad-jet size inlet anymore for a 350 motor. The car doesn't run on road or far so fire hazard is minimal or at least containable at the moment but I really don't know of any carb shops anymore. Would it be worth having it fixed or going to the scrap yard since it'll probably cost the same?
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Old Jun 5, 2009 | 08:35 AM
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AutoZone should have it for Q-J, there is a self threading replacement in the "Help" section of auto parts- made by Motormite.
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Old Jun 5, 2009 | 11:38 AM
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There is New T&S Tune-up & Carburetor in Uniontown, about 20 miles away from you.
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Old Jun 5, 2009 | 11:51 AM
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Originally Posted by rcread
There is New T&S Tune-up & Carburetor in Uniontown, about 20 miles away from you.
Thanks I was hoping someone more versed in finding businesses could help me out there. I'll check the fittings out too.

You mentioned Q-J what quadrajet would be in a *74' 350 auto w/air ?

Last edited by 21boy; Jun 5, 2009 at 12:14 PM.
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Old Jun 5, 2009 | 01:51 PM
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Originally Posted by 21boy
...You mentioned Q-J what quadrajet would be in a *74' 350 auto w/air?...
A 7044206 for the L48 and a 7044210 for the L82. I'm guessing the only real difference between the two would be jet sizes.

While the carb is off and being repaired, clean the gook out of the tank and blow out the fuel line from the tank to the engine compartment. That will get rid of most of the gook you're picking up at the carb.

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