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I have a Tecumseh TCII that leaks gas out of the carburetor, any idea?

Posted by Don Biscardi on


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Usually a stuck needle with rubbish under black rubber tip at seat. blow out with airgun.

Posted on Jun 03, 2019


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SOURCE: Leaking carburetor

replace to gaskets on the bowl and usually theres a screw/or spring release on the bottom of the bowl....replace those gaskets as well

Posted on Feb 27, 2009


Dwain Pippen

  • 376 Answers

SOURCE: replacement carburetor OHH55 tecumseh 5.5 hp rear

Need the 5 numbers and a letter following the model number to tell you that. :)

Posted on Jun 06, 2009


Philip Long

  • 1486 Answers

SOURCE: carburetor adjustments for tecumseh four cycle

Scew in tight then back 1 and 1/2 turn.

Posted on Dec 28, 2009


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SOURCE: my tecumseh engine 5hp leaks gas threw the carburetor to the airf

stuck needle valve or bad float in carb.

Posted on Mar 27, 2010

S. Zamkow

  • 4 Answers

SOURCE: gas leak out or the carburetor

Thiis usually caused by a failure of either the float valve or the float itself.

Bad float needle valve: If some dirt or other particle gets stuck on the needle valve or seat, the valve will not be able to completely close and fuel will continue to flow into the bowl and eventually overflow. A new needle valve and seat are < $5.00 on-line.

Bad float: If the circular float gets a hole in it, fuel will get inside and the "float" will get heavy and no longer float on top of the fuel in the bowl. Because it doesn't float it will not rise high enough to push the needle up into the seat and keep extra fuel from entering the bowl. A new circular float is < $10 on-line.

Posted on Oct 22, 2012

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I have a Suffolk punch 14 s with a Tecumseh engine model number AQ148 when I turn off the throttle petrol leaks out of the air filter please could you tell me how to fix the problem. Many thanks Neil

If engine runs fine and thats only problem the quick is a fuel shut off valve install and turn gas off before shut engine off or I think it is fuel float in carburetor that will need to be set or replaced.

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Just installed a new carburetor on a Tecumseh Snow King 8 hp engine. Gas is getting to the carburetor but no gas is filling the bowl and engine won't start

Sounds like the carb needle valve is stuck closed. Try loosening the bolts holding the carb to the engine, then tapping the carb lightly with a hammer. If gas then flows to the carb, re-tighten the carb bolts evenly and not too tightly.

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1 Answer

Ran perfect last yr , gas was stale drained carb bowl and replaced gas it started up right away then cuople mins later it started blowing oil out of the oil over flow tube

Sounds like the Needle valve in the carburetor is stuck 'down' letting gas continually run from gas tank into carb. When the valve can't go up (Close) gas will run past the carburetor and into the crank case I bet your oil is full of gas. Check oil level see if it is overfull

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I have a lawn boy 10335 push mower that sat unused for several years. I added new gas and went to start it up it spring a gushing leak out of the carburator. There is a small red hose that the gas was...

The needle and seat are bad in the carburetor. You need a tecumseh part 631021barterjoe_2.jpg and it might be recommended to get a service manual. They are inexpensive at a shop like
good luck

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Gas is leaking around top edge of the carburetor bowl. Is the float defective and causing overflow? Or something as simple as the gasket that seals the rim? Happens when I push the primer button.

Sounds like it would be the gasket seals or its just where its got to much gas in the carburetor. It shouldn't be a problem though as long as it doesn't leak while its running. My gokart does it sometimes. Its not that big of a problem.

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I have a problem with my 6hp tecumseh carburetor on my lawnmower, The gas keeps leeking out once I put it together. The float is not sticking, what can be the problem

Gas is leaking past the inlet needle (it has to - there's no other way the gas can get into the carb), OR the float has a hole in it, and isn't floating.

A carb repair kit will sort both problems for not much $$.

Jul 24, 2010 | Mtd Garden

1 Answer

Tecumseh Carburator Adjustments settings

Usually a Tecumseh with these symptoms has a clogged jet somewhere. If you dismantle the carburetor and clean out all of these tiny holes with a wire or something and spray it off with carburetor cleaner and reassemble it, it should work. Turn the adjustment screws in just until they touch the seats counting the turns and reassemble it with them the same number of turns off of the seats. Also, put fresh gas in it if you haven't. Gas being left in them is the main cause of this. If you put Sta-Bil in the gas before putting it away or run it out of gas it should prevent this from happening in the future.

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