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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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My 2011 25mercury efi 4stroke is putting gas in the oil,

Customer Question

my 2011 25mercury efi 4stroke is putting gas in the oil, bottom plug is burning rich? iuse this to run bank poles lots idling
Submitted: 1 year ago.
Category: Boat
Expert:  Charles replied 1 year ago.

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

Have you had the cooling system checked yet?

Customer: replied 1 year ago.
no I do need a new impeller
Expert:  Charles replied 1 year ago.

When the thermostat sticks open, it will not allow the engine to warm up properly, this will cause it to run rich all the time and you can get fuel in the oil. Start with removing he thermostat and inspecting it.