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Joe, Marine Mechanic
Category: Boat
Satisfied Customers: 7251
Experience:  ASE, electronics, Marine mechanical and electronics, pwc, wiring, all around repair tech,
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I have a 2005 Yamaha 2 stroke 150 HP outboard, last season

Customer Question

I have a 2005 Yamaha 2 stroke 150 HP outboard, last season the alarm came on due to low oil, the mechanic thought it was the cap to the oil holding tank in the motor should be replaced, ran the motor at the dock for 2 hours no problem. Went out the next day, the alarm went off again, he suggested we change the oil pump which we did this season, ran it at the dock for 2 hours no problem, took it out yesterday, an again the alarm went off due to low oil, I don't have a clue, unless when we stop the engine the oil drains and the pump can't keep up with it.
Submitted: 2 years ago.
Category: Boat
Expert:  Joe replied 2 years ago.
Thank you for allowing me to assist you, my name is ***** ***** I will be happy to assist you with your concern today.
First thing I would start with is restrictions in the system, it sounds like it pumps and fills just at a very slow pace to which it cannot keep up as the system uses faster than it can supply. In which case I would start by checking for restrictions, air leaks, and pump condition such as if weak and not pumping enough as well as checking the float and for loose connections.
To help further I would need the exact model number of the engine.
Thank you!
- Joe
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