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Joined: Sep 2006
Posts: 102
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2006
Posts: 102 |
The Carb on my 35 standard seems to be draining into my engine when not running.
Any ideas?
Gary
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Yes, it is normal with todays gas....called evaporation.There is no way for gas to drain out of the bowl unless it has a hole in it or the car is up-side-down.If it is happening when the engine is hot and shut off it may be perculation.Also common with modern gas.Will be worse if the heat riser is stuck in the "hot" position.
There was a discussion of this about two weeks ago.Perhaps if you do a search you will find it.
Gene Schneider
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Joined: Sep 2006
Posts: 102
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2006
Posts: 102 |
This is not normal, I cant imagine that the gas evaporates in 2 hours and besides the oil smells like gas also the carb is new.
Gary
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Joined: Apr 2004
Posts: 988
ChatMaster - 750
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ChatMaster - 750
Joined: Apr 2004
Posts: 988 |
Check your carb float for setting too low from sticking, gas logged or mis-set or any other reason the needle and seat does not shut off.
34 & 35 trucks are the greatest. 36 high cabs are OK too.
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Joined: Sep 2006
Posts: 102
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2006
Posts: 102 |
Thanks Pickup Man
I guess I should order a gasket kit first
Gary
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Check for a sinking float.
Gene Schneider
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Joined: Sep 2004
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Backyard Mechanic
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Backyard Mechanic
Joined: Sep 2004
Posts: 382 |
Also check the fuel pump diaphram.
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Joined: Sep 2006
Posts: 102
Shade Tree Mechanic
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OP
Shade Tree Mechanic
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Posts: 102 |
George33Eagle
Why would I be checking the fuel pump diaphram?
Gary
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Joined: Dec 2001
Posts: 11,162
ChatMaster - 10,000
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ChatMaster - 10,000
Joined: Dec 2001
Posts: 11,162 |
One reason for checking the fuel pump diaphram is that in case it is punctured it could let fuel into the inside of the engine and your oil could smell like gasoline.
Life's a long winding trail, love Jesus and ride a good horse!
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Joined: Sep 2006
Posts: 102
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Sep 2006
Posts: 102 |
If I understand correctly a hole in the diaphram could leak fuel into the crank case and by doing this could also syphon fuel from the fuel line between the pump and he carb.
Gary
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Fuel could run back down the line from the fuel pump up to the entrance to the carburetor. IT WILL NOT SIPHON FUEL OUT OF THE FUEL BOWL. The fuel in the fuel line would likely end up mixed with the oil in the crankcase. 
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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