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Ask Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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I have a 225 four stroke Yamaha 2004 after running at

Customer Question

I have a 225 four stroke Yamaha 2004 after running at cruising at speed say 4000 Rpms when it is returned to idle engine surges Rpms up and down
Submitted: 1 year ago.
Category: Boat
Expert:  Jason replied 1 year ago.

Hello my name is ***** ***** am I speaking with?

You could have sticking injectors. Do you have a fuel pressure gauge to do a test?

Customer: replied 1 year ago.
Expert:  Jason replied 1 year ago.

Without a gauge there is nothing we can test. Did you have any specific or general questions for me?

Customer: replied 1 year ago.
Engine only does this when retuned to idle not all times runs great other than this problem and only under load
Expert:  Jason replied 1 year ago.

I would have no idea what is wrong with your engine unless some testing is done and I knew the results of that testing. Do you have any questions for me?