MFS25 fuel in oil

[Mechmagcn]

Hi all. It's been awhile since I've been here, these Tohatsu motors are mostly trouble free.
With that said, I noticed my 2020 MFS25 smoking blue at startup a few days ago. Figured I should check the oil and maybe change it. When I pulled the dipstick probably a quart of oil came out, needless to say, very thin.
This being a fuel injected motor, is there anywhere besides the mechanical fuel pump for gas to enter the crankcase?
This boat is used daily and I have to get it fixed quickly. I changed the oil yesterday, but need to get parts before it gets diluted again.

 

[cyclops222]

You need a good mechanic. NOW

 

[Mechmagcn]

I am a mechanic, just not familiar with outboards.

 

[pvanv]

Check the low pressure gas pump. A blown diaphragm will do that.

 

[Mechmagcn]

Check the low pressure gas pump. A blown diaphragm will do that.

That's what I'm thinking, don't think there's anything else that'll put that much gas in the oil, but then again, I'm not sure how long this has been ongoing.

 

[matt167]

If that is HPDI then it could be a mechanical high pressure fuel pump. Those can dump gas in the oil

 

[Mechmagcn]

Talked to my local dealer and he thinks it's the low pressure fuel pump too. I'll pick it up in the morning.
Thanks all for the responses.

 

[Mechmagcn]

Ok, changed out the low pressure fuel pump two weeks ago and so far, so good. I changed the oil again when I put the new one on and have been checking the oil every few days, still right at the full mark.
Thanks guys, I hope this one is fixed.