Engine Sputters/Misses after Warming Up

[ScottS]

Have you checked to see that you have good fuel flow at the carb? Look in the tank to see if something is floating around and blocking the opening. SS

[Guest]

Still having trouble with the 10 hp Briggs in my 3110. Rebuilt the carb- went thru it twice rechecking everything. Begins to sputter and miss after it warms up- about 10 to 15 minutes. Will not adjust out with the high speed and idle adjustments- I think it’s something beyond the carb. I’ve installed a new plug and new coil (electronic ignition) - not much more I can do there. Flywheel key in good shape. I plan next to pull the head, check valve seats, springs, etc. Any other suggestions before I dig deeper? Thanks for any input.

[PatRarick]

I would replace the condenser first. If the problem persists, I would check the coil. Get an in-line spark tester and observe the spark when the problem begins. Pat

[Sandy_Lake_Imp]

Don't overlook the possibility of an air leak developing at the intake joints as the engine heats up. Bill