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Charles
Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3429
Experience:  US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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I was told by the local Omc mechanic that the information

Customer Question

I was told by the local Omc mechanic that the information about the oil is wrong . He said that on a evinrude 175 ficht that there is no setting on the oil mixture. My answer was to get the setting changed for xd50 oil from this service. How do you feel
about what he said?
Submitted: 1 year ago.
Category: Boat
Expert:  Charles replied 1 year ago.
Did they say anything about the oil pump at all?
Customer: replied 1 year ago.
No he thinks it could be the a hole in the diaphragm on the fuel pump or a bad injector.
Expert:  Charles replied 1 year ago.
Is one of the plugs getting blacker than the others?
Customer: replied 1 year ago.
They all are black. Two weeks in the motor. # ***** had a little oil & gas on the threads of the plug.
Expert:  Charles replied 1 year ago.
Do you do allot of idling?
Customer: replied 1 year ago.
No
Expert:  Charles replied 1 year ago.
Were they this black before you changed oil?
Customer: replied 1 year ago.
I had it tuned and never saw the old plugs. It did start this after I changed the oil.
Expert:  Charles replied 1 year ago.
What oil were you using before this?
Customer: replied 1 year ago.
A petroleum evinrude motor oil was always used in it by my friend and the dealer told me I needed to use xs50.
Expert:  Charles replied 1 year ago.
Actually according to the manual your engine will run on any TCW-III oil. Do you know if the oil return line is working properly?Can you test the oil pressure coming from the pump. With all 6 plugs being black, I would think that it either just the oil or something like too much oil pressure.
Customer: replied 1 year ago.
I guess it's over my hear and I will have to take it to a mechanic . Thanks
Expert:  Charles replied 1 year ago.
Your welcome. You would just need a pressure gauge to test it.

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