Unknown Catastrophic Failure

[S6T6]

So we used the boat all weekend with no issues. We all went out for a couple hours today before leaving the campground. Had a great time, ran perfectly. No warning lights, no CEL, no lugging engine, no stalling, no nothing. So we loaded it up on the trailer, pulled the drain plugs and WTF...oil leaked out everywhere. Checked the engine compartment and the bottom was covered in oil.

We are still in shock. We have the 5 yr warranty, so hopefully its covered. Dropped it at the dealer to see what they say happened. Anyone have any insight?

 

[Murf'n'surf]

Hopefully it was a loose oilf filter and leaked out oil.

I would take a look around the motor. Look for the source. Run your hand under the motor to try to pinpoint leak.

How's the level on your dipstick?

 

[S6T6]

This was the first outing this year and all fluids were fine. Didn't really have time to check for a source of the leak. I could see the filter and it was on tight. Then we had to get the boat to the shop then get back to the campground and load up the camper for the trip home in holiday traffic. We live 2+ hours away from the boat shop at the lake so they are supposed to call us this week.

I sure hope it is something that simple though.

 

[bronze_10]

the good sign is you didnt feel or hear any issues with the engine.

 

[S6T6]

Fingers crossed

 

[scokill]

Could be a handful of things that aren't catastrophic. No lights is a good sign. It doesn't take much oil to look like a lot either.

 

[BigN8]

Check the oil cooler bolts.

 

[haknslash]

x2 was going to suggest the oil cooler if the oil filter was on tight. I know they fixed that issue back then (around 2010-11 I think) but it would be my next place to inspect beyond the oil filter. Curious of the cause.

 

[VONCE]

Is this the first time out since an oil change? I made a post a while back about aftermarket oil filters. Some won't work with the MR-1s because the threads need to be recessed deeper than the main body or else the threads bottom out before the gasket can make a seal. https://jetboaters.net/threads/oil-filter-issues.13019/

However, I'm not sure what engine is in your boat, or if it's even the same design. Hope everything is fine!

 

[mraz72]

Who changes the oil?

 

[Cobra Jet Steering LLC]

He has an 1800 engine in that boat I have never had oil leak with thousands of combined hours running those engines. Never in any of mine even when a timing chain hatched so I am also curious as to the reason you have oil in the hull.

 

[Tom V]

Did the oil filter rust through around the crimped seem? This happens a lot. Its always good to apply grease around the base of the filter, filling the crimp seam to prevent rusting out.

 

[Cobra Jet Steering LLC]

Good point, I always cover mine with aluminum duct tape to protect them from the salt water.

 

[S6T6]

Our boat has never been in salt water. Dealer did the first oil change per the recommended schedule towards the end of last season. The boat only has around 50 hrs. This was its first use this season. With such low hours I would not have expected another oil change was necessary yet, nor would I think that would be the cause of the issue.

 

[Cobra Jet Steering LLC]

It was a good possibility and one that I totally forgot about so it would be easy enough to check , just feel the oil filter and see if it is leaking.

 

[Ronnie]

Check that the oil filter cooler face isn't warped. I had one crack and the other warp. I couldn't see that the second one was warped but the Yamaha tech found it and supported his findings to the insurance company with pics of the cooler face against a ruler. I would just feel around the perimeter of the oil filter cooler.

As someone else mentioned, it doesn't take much oil to mix with water in the bilge to make what looks like a very big mess. Any chance that the oil was accidentally spilled into the bilge and not cleaned up during the last oil change?

 

[Tom V]

I was think'n that too, did the tech leave a puddle of oil under the engine and now its showing up?

 

[Georg]

+1

 

[HybridSS]

If the oil level on the dipstick was fine your likely to be ok. Hoping for a good outcome.

 

[Tom V]

I agree.