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13 HP honda GX 390 issues


kerryd15

Question

Hi trying to help a friend with a honda on a powerwasher. The engine will start at idle and at wide open. At idle, it will run perfectly. At wide open, it runs perfect for 5-10 seconds and shuts down.

We put new gas in it.

Cleaned the gas sediment bowel on the shut off valve.

Pulled the carb bowel, cleaned the bowel, gas inlet, and ports multiple times.

cleaned the spark plug.

When it starts to die we tried choking, and using carb cleaner to keep running. When doing that it doesn't even try or sputter, like something is shutting down the ignition.

Engine is full of oil.

Any ideas? How do we check the oil sencor? I am usually pretty good with engines but i am baffled

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