Re: problems starting 1990 90hp force
Is the problem mostly on cold starts or does it occur even when the engine is warm?
Are you pushing the key and holding it in while cranking to choke the engine for a cold start? 1990 still had a choke solenoid. You should hear it click as it closes the chokes.
Are you putting the control handle in warm-up / fast idle position to cold start the engine?
Have you cleaned or replaced the sparkplugs? Even though they show spark, if the spark is weak, they can cause hard starting. You should be seeing a bright blue spark and hearing an audible snap when the plug fires
I bought a boat off of a buddy with a 90hp force on it. Used it last summer with little problems other than replacing the water pump. Went fishing today and had motor problems. When the motor is running it runs great but getting it started is almost impossible. Most of the time it will turn over with spark to all three pistons run for a second and then stall. It was also backfiring today while I was trying to start it.