1999 25 hp merc. 4- stroke. have to pump throtle to get and keep running.

w1

Cadet
Joined
Aug 25, 2010
Messages
14
have to pump throtle like choke is not working, and keep pumping after it starts to keep the motor running. I have cleaned the carb and tank, new lines, bulb and fittings. when it warms up it will idle at high rpm and die as soon as you try to idle down. so I cant put it in gear. new coil and plugs, It also runs the same reguardless of which plug wire is on which cylinder ( is that normal for this motor.) This is my first 4- stroke. any info would help. Thanks. I just pulled both new plugs. bottem plug is wet but not firing, top plug is firing clean.
 

w1

Cadet
Joined
Aug 25, 2010
Messages
14
Re: 1999 25 hp merc. 4- stroke. have to pump throtle to get and keep running.

I can make it run on the top cyl. and I can make it run on the bottom cyl. When I make it run on both cylinders it runs alittle better but not very much better!!!
 
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