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Have a 2.6 Parsuns outboard motor,runs for approx.15 minutes,then quits.Belive that it burns off the gas in the fuel bowl,then becomes air locked.If I give it a shot of WD-40 directly into the bowl,It'll start and run until I shaut it off.After sitting for awhile,It runs for 15 minutes ten dies.It won't start again until give it another shot of WD-40!!!!

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Some very basic points first....have you checked and replaced the fuel filter ? These often clog over time and require replacing at service intervals. Is there a water separator in the fuel system and if so have you drained it ? Have you tried running the engine from another fuel source ? I have known fuel pipes to break down internally and cause restrictions to the flow of fuel from tank to engine. If the engine starts and runs then dies it is almost certainly going to be fuel supply causing the issue.

Posted on Jun 04, 2014

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Sounds like the idle jet in the carb is plugged up.

It only stays running from the primer load, then dies when that is used up, as the gas can not get from the float bowl through the idle jet.

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