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Simpson 2800 psi pressure washer with Honda GCV 160 engine.

Engine starts first pull and will remain running until wand trigger is engaged. Then engine stops 10-30 seconds later. Sometimes with a small backfire, sometimes not. Release wand pressure, start, repeat. It won’t remain running.

I’ve tried multiple unloader valves and even replaced the pump assembly completely. Carb has been thoroughly cleaned and gas cap venting ‘cleaned’. New gas too.

Looking for recommendations from others who know better than I. Thank you. John
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