Briggs seems to be starving for fuel.

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  #1  
Old 07-12-16, 08:16 AM
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Briggs seems to be starving for fuel.

I have a B&S 7.25 128M05 5468M1 1301085 on a Craftsman self propelled mower. After a few hours of mowing it starts to act like it's starving for fuel. I have cleaned the carb in a sonic bath then replaced the carb with a known good one. I have flushed the tank twice and put in fresh fuel. Replaced air filter and plug. Exhaust isn't clogged. Is there a way to check the fuel cap? Kinda lost on this one!
 
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Old 07-12-16, 08:39 AM
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Try running it with the fuel cap loose. Have a good one. Geo
 
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Old 07-12-16, 09:09 AM
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Good call! Thanks Geo! Have a good one.
 
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Old 07-12-16, 03:47 PM
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Briggs seems to be starving for fuel.

Decided to check compression, 30psi hot. Let it cool, put it tdc on compression stroke and heard air coming from exhaust. Need I say more!!!!!
 
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Old 07-12-16, 05:10 PM
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The exhaust valve is open just before TDC....???

I would question your compression gauge, if it has been running, I doubt it is on 30 PSI compression.
 
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