New Yamaha 150 4 Stroke leaking oil into splashwell when up

[ksgoldman]

I have a 2010 Tournament 275 with twin Yamaha 150 4-Strokes that was launched for the first time in April this year. I now have 65 hours on the motors and the starboard engine leaks a small amount of oil into the splashwell when the engine is tilted up (to port) at the mooring. It's definitely motor oil and only happens when the motor is tilted up. The oil is coming from the front of the cowl in a hole under the cowl. Over the course of a week of the motor being tilted up - it's probably about 10 drops (if it came out of an eyedropper).

I had the oil changed at 20 hours and had no problems before the first oil change. I'm not sure when this dripping started (I don't believe that it started right after the oil change but it could have). My dealer thinks it's just residual oil in the oil pan from the oil change. I've checked the oil level each time I go out and it appears to be where it should be. Oil pressure is also fine (I have the engines hooked up to my Garmin 4212 so I can see exact oil pressure which is the same between both engines).

I have the extended warranty through 2016.

If it were your engine - would you be worried? Do you think it's just residual oil from the oil change (even 45 running hours later)? My dealer is outstanding so I have no reason to doubt what they are telling me (but obviously on a brand new boat with new engines - I don't like seeing something like this).

I did check the oil filter to make sure that it's tight (as well as the oil fill cap). Anything else you can think of that might be causing this?

Thanks.

 

[gradyfish22]

Do you possibly have too much oil in the engine? What is the level on the dipstick? It should be between H and L in the middle of the hash marks, not at the Full line, that is too much oil and will leak out of the engine when tilted up, and can also build pressure and cause the engine to bog down or a crank explosion... hopefully its not that but too much oil can be a bad thing and can cause it to leak out on those engines.

 

[el jefe]

I had a similar problem recently on my port 225. It started when my mechanic suggested I leave the engines tilted to the port (up) rather than straight up (I keep the boat in the water). he suggested this to save wear and tear on the control tubes. Anyway, shortly after I noticed a few drops of oil in my well. I pulled the cover off the engine and looked in the base of the engine housing to see if there was a leak and how big. I cleaned out a little oil with a papertowel, but not enough to suggest a major leak. I checked the oil level with the dip stick. I made sure the dip stick was re secure and have not had a problem since then. I tend to think there may have been some residual oil from the service I had done and when I left the engines on the side rather than straight up and down it just found its way out. Haven't seen anything suggesting a problem since then.

 

[eppem]

My guess is residual oil from the oil change. Take the cowling cover off and see if there is oil sitting inside of the engine. You may be able to wipe / clean it up with a paper towel? I have had that happen in the past when engines are serviced..