gas over flow on carbs?

jarod boyd

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Apr 12, 2009
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6
I want to thank those who have patience with the shortness of some of my questions. This time I will explain in full. I know there is an over flow on my throtle body for each cylinder. The question is that when sqeezing the bulb the gas comes out the over flow and bulb gets soft. Would that mean that the pin is sticking or can floats go bad. If it seals corectly I shouldn't have gas come out, should I?
 

lindy46

Captain
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Nov 27, 2008
Messages
3,886
Re: gas over flow on carbs?

What motor? I'd check float - either not floating or set to close too high. Has the carb been cleaned/re-built? If not, get a carb kit WITH float, clean carb, install the new carb kit and try her again.
 

jarod boyd

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Apr 12, 2009
Messages
6
Re: gas over flow on carbs?

What motor? I'd check float - either not floating or set to close too high. Has the carb been cleaned/re-built? If not, get a carb kit WITH float, clean carb, install the new carb kit and try her again.

iT'S A JOHNSON VENOM 225HP YR 1995.IS IT NORMAL FOR THE GAS TO COME OUT OF THE OVER FLOW WHEN PUMPING THE BULB OR SHOULD THEY SEAL AND KEEP THE GAS IN?
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: gas over flow on carbs?

The float lifts the needle, closing the valve as the float bowl fills. When the float is level with the carburetor body, the needle stops the flow and no more fuel can enter until the engine draws fuel from the float bowl.

If the needle's rubber tip is worn, if the seat is damaged, if the float is not set correctly, or if the float is saturated and sinks, the fuel will continue to flow.

Having the needle properly connected to the float arm with the clip helps.
 

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jsalz

Petty Officer 2nd Class
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Jun 12, 2008
Messages
103
Re: gas over flow on carbs?

The float lifts the needle, closing the valve as the float bowl fills. When the float is level with the carburetor body, the needle stops the flow and no more fuel can enter until the engine drains the float bowl.

If the needle's rubber tip is worn, if the seat is damaged, if the float is not set correctly, or if the float is saturated and sinks, the fuel will continue to flow.

Having the needle properly connected to the float arm with the clip helps.

Not trying to hijack, but is there a dimple or something on the float arm that the clip rests in? Also, does it matter from which side of the arm you attach the clip. I wondered about it when I did mine.
 

ezeke

Supreme Mariner
Joined
Sep 19, 2003
Messages
12,532
Re: gas over flow on carbs?

To jsalz: The tension is on the needle, the part that slips over the float arm is loose around the arm. It does not matter which direction the clip approaches the float arm.
 

jarod boyd

Cadet
Joined
Apr 12, 2009
Messages
6
Re: gas over flow on carbs?

The float lifts the needle, closing the valve as the float bowl fills. When the float is level with the carburetor body, the needle stops the flow and no more fuel can enter until the engine draws fuel from the float bowl.

If the needle's rubber tip is worn, if the seat is damaged, if the float is not set correctly, or if the float is saturated and sinks, the fuel will continue to flow.

Having the needle properly connected to the float arm with the clip helps.

So what it's doing is bad and I should rebuild all 6 since it's doing it on all?
 
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