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#1
07-06-2009, 02:26 PM
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81 G20 Carburetor problem(?)
My girlfriends dad has a 1981 Chevy G20 5.0L. He took a short trip over the weekend and on his way back it started running bad (wanted to stall, etc.) and had trouble getting it started - I think that was a battery problem but I will get more details later. Anyways when he got home he removed the doghouse and he said when it was idling the carburetor was filling up with gas. I am a mechanic but honestly I don't know much about carburetors.
Any suggestions, ideas, etc... Thanks Joe
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R.I.P. - 94 Jeep Grand Cherokee Limited 5.2L V8 Quadra-Trac, 3" Budget Boost, K&N FIPK Gen II (Cold Air Intake), FlowMaster American Thunder (Exhaust). W.T.T.F. - 1998 Jeep Grand Cherokee 5.9 Limited - Deep Slate Pearl - K&N FIPK GEN II (COLD AIR INTAKE), Altezza Tails and Crystal Clear Front end light with HID Kit and NP242 Swap. 
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#2
07-07-2009, 09:03 AM
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Re: 81 G20 Carburetor problem(?)
Quote:
Needs another carb or the old one rebuilt.
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Remember proper testing gives us the answer to many problems. MT
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#3
07-07-2009, 04:48 PM
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Re: 81 G20 Carburetor problem(?)
how hard are they to rebuild?
__________________
R.I.P. - 94 Jeep Grand Cherokee Limited 5.2L V8 Quadra-Trac, 3" Budget Boost, K&N FIPK Gen II (Cold Air Intake), FlowMaster American Thunder (Exhaust). W.T.T.F. - 1998 Jeep Grand Cherokee 5.9 Limited - Deep Slate Pearl - K&N FIPK GEN II (COLD AIR INTAKE), Altezza Tails and Crystal Clear Front end light with HID Kit and NP242 Swap.
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#4
07-07-2009, 05:05 PM
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Re: 81 G20 Carburetor problem(?)
Quote:
But you need to make sure it is rebuildable. Some are plain worn out and leak gas threw inside.
__________________
Remember proper testing gives us the answer to many problems. MT
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#5
07-10-2009, 03:35 AM
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Re: 81 G20 Carburetor problem(?)
I assume this has the original Quadrajet. Maybe you could carefully unbolt the top and clean out/replace and adjust the float and needle and seat assembly and replace the gasket. Sometimes the casting on an old Quadra can leak, but it might just be a bad or dirty float needle and seat or gasket.
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#6
07-25-2009, 06:37 PM
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Re: 81 G20 Carburetor problem(?)
Float leaking, filling the intake with fuel. Is it burning black exhaust??? Carefully remove the carb, the top of the carb body, to NOT spill fuel out of the bowl, and check the float.
Vacuum leak will also cause flooding. Any loping idle?
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#7
07-30-2009, 08:48 PM
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Re: 81 G20 Carburetor problem(?)
The Quadrajet is very easy to rebuild and parts are much easy to get.Muscle Car,a tv show on Spike TV did an episode how to rebuild these carbs.
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