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Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3734
Experience:  US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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I have a 05 Mercury 175 xr2 and it keeps putting gasoline back

Customer Question

I have a 05 Mercury 175 xr2 and it keeps putting gasoline back into my oil resevoirs. What is going on here? We have replaced the check valve attatched to the fuel pump and it still happens. Can you please help?
Submitted: 2 years ago.
Category: Boat
Expert:  Charles replied 2 years ago.
Hello, my name is***** you for allowing me to assist you today.
Would you please post the serial number of the engine ?
Customer: replied 2 years ago.
Expert:  Charles replied 1 year ago.
With you getting fuel into the oil the only place that can come from is the engine pressure fitting for the oil injection. remove the pulse fitting from the stbd side of the engine block. It has a black hose attached to it. Blow thru the fitting both ways.
Also make sure that the engine is running on this cylinder.

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