Question about Light Outboard Motor Boat Bass Fishing Saltwater Base

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90hp mercury will start but not run

1996 90 hp 3-cyc mercury--* will start but cuts off--acted like running out of gas---not the problem---1 filter under hood is ok-- on water hose now--- can keep running a little by playing with choke and throttle---i do not want to over look weak fire ---- do not know which way to go--- not a rocket doctor or real smart but can replace the part if i knew which one---- finding problem it most of the time my biggest problem---last two times i was out it seemed it fell out for just a split second and then picked right back up boat it used right much so i don't think setting up is the problem but i do not know
thanks for any help

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Check the wires leading to the CDI box for cracks or wear. Not there to know what is really going on but it could possibly be this or bad gas? drain gas and try some fresh stuff, also look for a good conditioner which will clean depots out of the carb. Hope this helps.

Posted on Jul 25, 2009

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Could be needle and seat in carby sticking-or possiblylow fuel pump pressure-dirty fuel filter-blocked pinched fuel line-fuel tank air vent open?

Posted on Oct 15, 2009

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I have a 1987 yamaha ,3 cyl 50 hp. just cut right

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