Mercury 4 stroke 90 hp 2001 carberatored

by Rick
(Standish Me.)

Well motor runs and starts great except when I’m running at 2200 it starts to really running rough like cylinders dropping out and sometime stalls but not as bad when warmed up. As soon as it gets through to 2600 rpms its like a switch and runs perfect again through rest of rpms cycle to 5500. Does the same thing coming back down through the rpms. Does it every time at exact same rpms. Seems like it’s electrical where it is same every time. Have tried disconnecting the shift interrupter switch with no change. Not sure what else to try thanks for any help

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.