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2002 40 hp merc idle problem

paulp

New member
having trouble keeping it runn

having trouble keeping it running bogs out.if i get the throttle up it runs good for a bit and revs high to low and eventually quits. the motor has new cabs and cdm module's along with stator and trigger.the fuel pump was rebuilt a yr ago. but my brother tried to start it with crap fuel.could it be the crap fuel plugged the pump? how far is the idle mixture screw have to be turned out.
 
ok i figured it out it has to

ok i figured it out it has to be the pump or clogging in the fuel line in the tank. the tank that was in the boat it won't run off of. i bought 1 of those portable tanks that sit on the deck of the boat and runs fine no bogging at all.but on the carb i have the idle mixture screw and then there is a hole next to it it keeps pissing out fuel threw it. any ideas anyone could the floats be stuck?
 
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