1993 20 hp mercury not running right.

hungupcity

Recruit
Joined
May 10, 2019
Messages
3
Motor won’t idle right and bogs down at full throttle and that’s when I’m running it at the lake. Will run ok at about half speed. I’ve cleaned the carbs about four times now and not any better. I can turn the idle up and it runs a little better but it’s to high to run that way.

Plugs are running a little wet. I can adjust my fuel mixture screw but it will just kill the motor if it’s to much or less.

Does this sound like a carb/fuel problem? Or electrical?

Ive checked spark plugs with in line tester. Brand new plugs as well. I’ve taken the coils apart and inspected wires going to and from it

Compression is 120 in both cylinders.

I have fresh mixed gas at 50:1 ratio. I have a brand new gas can as well
 
Top