1989 9.9 evinrude won't increase rpm

smokincrow

Recruit
Joined
Aug 7, 2013
Messages
2
Hello all, ive got a 1989 9.9 that once i start it and try to give it more gas it does not increase rpm's. Runs rough like if it could take more fuel to clean it out and run smooth but stalls and become hard to start again. If i pull the choke it will start and run for a few seconds and then die. I changed the plugs and got new fuel. It was running fine 2 weeks ago. Hope someone can give me some ideas. THANKS
 

Daviet

Fleet Admiral
Joined
Sep 24, 2008
Messages
8,958
Re: 1989 9.9 evinrude won't increase rpm

Welcome to the forum.
Will the spark will jump a 7/16" air gap and is it bright blue? What do the plugs look like?
What are your compression numbers, are the cylinders within 10% of each other?
If all the above are correct, I would service the fuel delivery system, might be time to overhaul the carb.
 
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