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Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3928
Experience:  US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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Have a 2001 225 hp optimax that surges a little on plane at

Customer Question

Have a 2001 225 hp optimax that surges a little on plane at 5000 rpm replaced plugs but not wires
Submitted: 1 year ago.
Category: Boat
Expert:  Charles replied 1 year ago.

Hello, my name is***** will assist you.

Expert:  Charles replied 1 year ago.

An engine surge on an Opti can be many different items. To start with, I would test the fuel and air pressures when the engine is at idle to see if they are still in spec. 90 Fuel and 80 Air. The test ports are located on the fuel rails. Also ensure that you are getting spark on all 6 cylinders.