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    Honda 40 2007 Starts and runs smooth for 2 seconds then rough.

    You were correct it is a carbureted model. I did perform a comp test. All cylinders within 5lbs at 1@180 2@185 3@185psi. I was pleased with those readings. Just very perplexed as to why it runs so well for a moment time after time. I'll get a spark tester next. Thanks so for the tip on the coils...
  2. T

    Honda 40 2007 Starts and runs smooth for 2 seconds then rough.

    I just purchased a boat with a Honda 40. The boat sat for several years. It would overheat so I replaced the water pump and impeller. Overheating is solved. When I follow the pre-start procedure turning the key on and pushing the throttle to full and back, the engine starts and seems perfect for...
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