[SINARC]

I Have A Mariner 225 Boat Will Not Come Off Plane Will Not Go Over 2000 Rpms While In Gear. Does Not Do It All The Time. Starts And Ideals Fine. When In Netural It Runs Fine And The Rpms Go Over 2000 Rpms, Once In Gear It Won't Go Over 2000 Rpms And Won't Come Off Plane. Please Send Me Suggestions

[steelespike]

I think you mean it won't plane. Coming off plane is what happens when ypou slow down.
What year motor and what boat.
Sounds like a classic fuel supply problem or perhaps it is not running on all cylinders.Be sure throttle opens all the way.I wasn't aware Mariner had a fuel injected motor.?

[SINARC]

The Boat Is A 1995 Nitro Bass Boat 20 Foot Long .the Title On Boat Says This Is The Motor That Came On The Boat So I Am Thinking That The Motor Is A 1995 . I Don't Know Much About Boats This Is The First One That I Have Owned . The Throttle Work Fine When The Boat Is In Netural. The Pump Ball For The Feul Stays Hard. Will Not Go Over 20rpms When The Motor Is In The Water And Under Pressure. Thank You, All Help Is Welcome

[steelespike]

Has the boat ever run right?Reving in neutral means nothing and you also shouldn't go above 2,000 rpm in neutral.Are you sure the carbs are opening all trhe way?Does the choke/primer help when trying to accellerate?

[SINARC]

Sorry I Did Not Get Back .was Out Of Town Woring . I Got The Problem Fix By Changing The Spark Plugs . Boat Is Running Good Now . Thanks For All The Help.