Leaking carb brand new

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  #1  
Old 11-06-19, 01:34 PM
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Leaking carb brand new

Tecumseh 5.5 enduro xl/c generator I put a new carburetor on and gas leaks from the air filter ordered another one and same problem
 
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  #2  
Old 11-06-19, 03:13 PM
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You need to remove the float bowl and adjust the point where the needle valve stops flow from the gas inlet port. If you don't have the spec (measurement) from the motor manufacturer try this. Get a piece of gas line to fit the inlet port. With the carb upside down, lift the float and you should be able to blow air thru the gas line. Lower the float until you can't blow air through the gas line. The body of the float should be parallel to the carbs float bowl mounting surface. If not bend tang on float bowl needle valve contact tab to establish the needle valve cutoff point.
 
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Old 11-06-19, 03:56 PM
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I’ve been adjusting it but not the way you described I’ll try that next thanks
 
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Old 11-06-19, 04:19 PM
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I got it perfectly lined up but that didn’t fix it any other ideas?
 
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Old 11-06-19, 05:13 PM
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The gap is 9/64 per the Tecumseh manual. Have a good one. Geo
 
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Old 11-06-19, 06:53 PM
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Thanks I’ve adjusted it all different ways and same thing I would think a new carb would be factory set guess not.
 
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Old 11-06-19, 06:57 PM
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I only changed it because the rubber priming button was torn super frustrating now
 
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Old 11-06-19, 07:21 PM
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OEM or aftermarket carb where did you get it from?
 
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Old 11-06-19, 07:51 PM
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Are you saying you have adjusted the float and can't get the float to shut off the fuel flow? Now the gas runs constantly out of the air filter? Or when you run the primer bulb gas runs out of the filter, then stops?

That primer is an air injecting bulb. It would put air in the float chamber and force gas into the throat of the carburetor. If you over prime it some of the gas would run out of the air filter.

That's different than the primer bulb on a two stroke.

And you can change those primer bulbs without a new carb.
 
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Old 11-07-19, 01:04 AM
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Yes I’ve adjusted the float to multiple positions and the fuel keeps leaking from the air intake side of the carb
 
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Old 11-07-19, 01:17 AM
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I think it’s After market from e bay but two in a row with the same problems?
 
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Old 11-07-19, 01:20 AM
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I never pumped the primer bulb
 
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Old 11-07-19, 03:02 AM
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does sound like the its leaking by the needle and seat or a float problem, but would probably check for excessive pressure causing the float not to be able to shut off the fuel if it s gravity fed really only leaves pressure building up in the tank.
 
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Old 11-07-19, 04:14 AM
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There's no point in trying a lot of different float positions. Normally when a float is in the up position,intended to shut off the flow of gas, it will sit parallel to the top of the float chamber.

With the float bowl removed and light pressure on the float, then you still have fuel leaking past the float valve?

A lot of times when you can't fix the obvious, it turns out to be something else.
 
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Old 11-07-19, 11:10 AM
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Turn the carb upside down and if you can blow air(with your mouth) into the fuel inlet the needle and seat are bad. Have a good one. Geo
 
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Old 11-11-19, 04:36 PM
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Thanks for all your suggestions

I ended up using the original carb and changed the air primer with a new one from one of the new carbs and no problems now but still donít know why two new carbs had this issue oh well it works now.thanks!
 
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