joseignacio
New member
"I have a 1998 Mercury 150 Out
"I have a 1998 Mercury 150 Outboard. I completed a tune up which had to replace the spark plugs, thermostats, fuel filter, water separator filter and lower unit gear oil. During my last trip I noticed that the RPMs were high as soon as I started the motor. I took off and later couldn't switch gear to neutral due to the RPMs were stuck on 3,000. I forced the throttle to neutral and the motor RPM went high !!. I turned the motor off and started again. This time I went almost full throttle for a little bit and the RPMs got normal when I slowed back down. I did it again on my way back to the pier. The motor has now a high idle. The cables were inspected and are fine."
"I have a 1998 Mercury 150 Outboard. I completed a tune up which had to replace the spark plugs, thermostats, fuel filter, water separator filter and lower unit gear oil. During my last trip I noticed that the RPMs were high as soon as I started the motor. I took off and later couldn't switch gear to neutral due to the RPMs were stuck on 3,000. I forced the throttle to neutral and the motor RPM went high !!. I turned the motor off and started again. This time I went almost full throttle for a little bit and the RPMs got normal when I slowed back down. I did it again on my way back to the pier. The motor has now a high idle. The cables were inspected and are fine."