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Discussion Topic:
carb help
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pbc64 |
05-28-2011 @ 1:28 PM
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Member
Posts: 44
Joined: Mar 2010
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h*llo need help have a 41 ford with a 59ab and a 8ba carb im getting gas in the oil i rebuilt the fuel pump i pulled the top of the carb off and filled the bowl flush to the top within a couple of minutes noticed the fuel level going down i took it off the car and on the bench did the same the fuel is going through the jets and running through both discharge nozzles right down the barrels ? paul
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Stroker |
05-28-2011 @ 3:10 PM
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Senior
Posts: 1460
Joined: Oct 2009
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Sounds like a ruptured diaphragm in the power (economizer) valve.
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pbc64 |
05-28-2011 @ 3:32 PM
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Posts: 44
Joined: Mar 2010
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h*llo i have not ruled that out but would that cause fuel leaking through discharge nozzles? i have extra valves will change it paul
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ford38v8 |
05-28-2011 @ 4:16 PM
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Senior
Posts: 2780
Joined: Oct 2009
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Paul, if fuel is leaking through the nozzles, you may have lost your check valve from the accelerator pump.
Alan
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Stroker |
05-28-2011 @ 4:26 PM
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Senior
Posts: 1460
Joined: Oct 2009
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After looking at my schematic, I believe Alan is right. It could just be some crud around the check ball, as unless you had it apart, the ball should be there.
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37RAGTOPMAN |
05-28-2011 @ 4:48 PM
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Senior
Posts: 1969
Joined: Oct 2009
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I Would check the needle and seat, to make sure they are shutting the fuel off,when the float level is to specs, also check to see that the float is ok. my 3 cents 37RAGTOPMAN
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TomO |
05-28-2011 @ 4:50 PM
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Senior
Posts: 7264
Joined: Oct 2009
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Paul, you should not fill the bowl any higher than 11/16. I check the carb for leaks by filling to the top of the recess for the power valve. Filling to the top of the bowl, will cause the symptoms you describe. Your power valve could be leaking or your float set too high or the accelerator pump ball could have dirt under it or the pump discharge needle may not be seating.
Tom
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pbc64 |
05-28-2011 @ 5:14 PM
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Member
Posts: 44
Joined: Mar 2010
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h*llo thanks everyone i will check all when checking for a leak on the bench i noticed more fuel leaking on the acelerator pump side at the bottom i dont have the carb with me at the moment it will be a day or so before i let you know how about metering valves not seating ? paul
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ford38v8 |
05-28-2011 @ 6:53 PM
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Senior
Posts: 2780
Joined: Oct 2009
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Paul, TomO is correct, as usual. While we all did have a clue, Tom engaged his brain to give you the full story. Your last question, metering valves, I assume you mean the idle screws. These are never seated, they are set to provide adequate fuel while idling and are vacuum primed, meaning that they stop dribbling when the engine stops.
Alan
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pbc64 |
05-29-2011 @ 5:48 AM
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Member
Posts: 44
Joined: Mar 2010
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ford 38v8 yes your right i remember they screw in lightly and hang in place when i find the problem i will let you know paul
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