Mercury optimax 225

Gamblerman

Petty Officer 3rd Class
Joined
Jan 18, 2008
Messages
75
Can anyone tell me y my 2001 optimax Is fouling out one plug .
The plug is black very black and dry as a bone. What I have done so far. New plugs wires fuel filter injectors where sent out to be cleaned and tested.new tracker valve. Motor starts very easy runs great for one outting no lose in power at all the following day she starts and idles fine as soon as I get on it she falls on her face rpm’s will not come up. Then I pull the black plug clean it and she back to being a monster also all coils are working and compression test was done and she is all with in range
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,644
Mark and swap the air injector to different cylinder and see if problem follows it.
 
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