mercury 150hp four stroke 2015

by micah
(manchester, NH. usa)

Im in the northeast, just bought a boat with a 2015 mercury 4 stroke 150hp motor when I put the water muffs on it in my driveway it starts, idles a little rough, but really cuts out at just under 3000 RPMs. shakes and cuts our will not go above 3000RPM's. I have checked and have spark on all 4 wires, I also just replaced the spark plugs. Would love to get this boat on the water if I can figure this issue out. shaps are all backed up 3-4 weeks based on covid and busy time of year.

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Mercury Forum.