Join Date: Nov 2006
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Johnson 9.9 Problem, please help, dont know where to look for advice:(
Ok, here is the story, last year i purchased a 26 foot c&c. It came with an outboard, nice Johnson 9.9 with an electric start. The motor worked just fine last year, on the last day of the pull out it died, and wouldnt start for a while. it did start later on that day, but would not rev higher and bog. Few days ago while on my boat, i put new spark plugs in, the old ones were black, completely black, i remember that last year they looked normal. I cleaned them up put them in, the motor started just fine, didn't shake anymore, didn't bog, etc... i ran the motor for half an hour, and after that it would start to bog. Removed the spark plugs and they were black again. check the fuel filter, checked the oil level, checked the cables on the spark plugs etc. All this was done with brand new fresh gas. Somebody suggested that the fuel line might be faulty and that it might be sucking in air. I tried a different one. I have removed the carburator, sprayed it throughout with carb cleaner etc.
obviously it is running to rich and the fuel is not burning up. Where to look? any adjustments on the carb? there isn't too many screws/adjustments on it.
The motor is 2002/2003 model. 9.9 Johnson with electric start. It is a four stroke motor.
Please help, or tell me where to look for the problem.
Any help is appreciated.