Mercury 200XL. Year 2020. 6 cylinder

by Tom

I have less than 80 hours on this motor and at a steady RPM/speed in calm water the RPMS jump 250-300 RPMS for 2-3 sec and the boat speeds up and then goes back to its steady RPM/Speed.

So far the fuel/water separator has been changed.
6 spark plugs changed
The VST has been changed and it is still doing it with no codes popping up.

Has anyone else experienced this or have thoughts on what might be causing this to happen?

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.