Tecumseh formula 11hp issue

Vega3410

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Hello.. my first post here.. I recently purchased a Coleman generator with a tecumseh 11hp motor on it.. the issue I'm having is itll run about 10 min and then surge for a second then shutoff.. you can choke it and it fires up runs for a min and stalls.. I've cleaned the carb twice replaced the spark plug fuel filter and put in fresh gas.. I'm not sure where to look next..
 

Russ2251

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Verify that cap is venting.
If it is not, engine will behave exactly as you are describing.
Surging indicates a lean condition.
There are other possibilities.
 

Rivets

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When you cleaned the carb did you check the float level? Please post all engine numbers so we can see what carb you have.
 

Vega3410

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Loosened cap.. ran about 45 minutes.. longest since I've had it.. didnt notice float level..

It's a Coleman generator model# PMA525500.01
Tecumseh formula 11hp motor..
 
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Rivets

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Depending on age, either stamped in the top or side of the shroud or black and silver tag on side of shroud. Need all numbers.
 

Vega3410

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Yes just stalls.. starts right back.. runs a few minutes and stalls again..
 

Russ2251

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I suspect another issue.
The fact that it takes so long for engine to run lean and then to surge and then stall
tells me there is a slow blockage taking place.
There must be a trash buildup somewhere in the fuel supply, likely in bottom of tank.
 

Rivets

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I agree, make sure the tank has nothing floating in it. If that fails to solve the problem I would then look at the carb, which is one that I hate to work on. No real adjustments, only thing you can do is purchase a bowl kit and replace the entire lower part of the carb.
 
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