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carburator #173878 05/20/10 04:11 AM
Joined: May 2010 Posts: 1 canada mortimer OP Grease Monkey
OP mortimer Grease Monkey Joined: May 2010 Posts: 1 canada	my 1931 chev runs great when its cold but when the engine warms up and get hot it slobbers fuel out the carburator,it has an updraft johnson carburator any suggestion would be appreciated thanks

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Re: carburator mortimer #173883 05/20/10 07:18 AM
Joined: Sep 2008 Posts: 1,049 CHICAGO, IL Ken_Naber ChatMaster - 1,000
Ken_Naber ChatMaster - 1,000 Joined: Sep 2008 Posts: 1,049 CHICAGO, IL	what kind of fuel pump do you have? I have a 1927 Chevy Capital AA 4 Door also a 1927 Chevy Touring car, a 1936 Chevy 1/2 ton and a 2010 Corvette LT3 Convertible and a 1953 Packard Caribbean. My tow car is a 2011 Suburban.

Re: carburator Ken_Naber #173886 05/20/10 08:27 AM
Joined: Feb 2009 Posts: 154 Lubbock,TX thutch7244 Shade Tree Mechanic
thutch7244 Shade Tree Mechanic Joined: Feb 2009 Posts: 154 Lubbock,TX	If you are using a vacuum fuel pump, check the vacuum shut off valve in the cover of the vacuum tank or the butterfly valve in the bottem of the tank. Listen to the "click'n" of those push rods

Re: carburator mortimer #173899 05/20/10 10:04 AM
Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon Junkyard Dog Tech Advisor ChatMaster - 25,000
Junkyard Dog Tech Advisor ChatMaster - 25,000 Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon	Hi there and welcome to Chevy Chatter II! Glad to have you with us! To get the correct answers you might want to post the questions regarding your 1931 in the 1929-32 forum instead of here in the 1912-28 forum. The correct carburetor for your 1931 Chevrolet is a Carter Model 150-S. The aftermarket Johnson carburetor could be your problem. Quote If you are using a vacuum fuel pump, check the vacuum shut off valve in the cover of the vacuum tank or the butterfly valve in the bottem of the tank. Since he has a 1931 Chevrolet he should have a mechanical fuel pump instead of a vacuum tank. The Mangy Old Mutt "If It's Not Junk.....It's Not Treasure!"

Re: carburator mortimer #173902 05/20/10 10:12 AM
Joined: Nov 2001 Posts: 19,758 Likes: 64 The Great State of TEXAS Chipper ChatMaster - 15,000
Chipper ChatMaster - 15,000 Joined: Nov 2001 Posts: 19,758 Likes: 64 The Great State of TEXAS	I can't think of a reason that the carburetor would leak when hot and not when cold except if the fuel is boiling. That is highly unlikely as the vaporization of gas has a cooling effect. It might be a factor of time and not heat. In that case it could be the air vent to the float bowl is plugged or partially plugged. Or you have a small leak in the needle/seat. How Sweet the roar of a Chevy four!

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