Author Topic: Gas in Oil  (Read 680 times)

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Offline Vacarider

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Gas in Oil
on: May 04, 2020, 03:30:02 AM
Today I was on a calm ride on my 2017 500x RR3 with 1300 miles on it when the engine stopped.
I pulled over and restarted it and the check engine light was on so I stopped it immediately.
Upon checking the oil level it was much higher than max, liquidy, and there seemed to be foam on top.
When I smelled into the crank case it smelled of gas.
So I called for a tow and will be calling the dealer on Tuesday when they open.
I've asked some folks who know more about mechanics than I and seems like an injector could have gotten stuck open.
Now the engine will start and idle very smoothly, which made it easy to load it onto the trailer, but obviously I'm not going to run it with the oil in that condition and I don't want to change it without speaking to the dealer in case they need it to investigate.
Does anybody have any differing ideas about what may have happened?
If this were to happen far from a tow or dealer, is the best choice to hitch to town to buy oil and do a roadside change?
I'd appreciate any ideas.
I am planning a several thousand mile trip within the next month so glad this happened now, but more experienced insights will be helpful.

Offline MegaShawn

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Re: Gas in Oil
Reply #1 on: September 26, 2020, 01:41:46 PM
That sucks!
Interested to know what happened?

Ride Safe


Offline motorboy

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Re: Gas in Oil
Reply #2 on: September 26, 2020, 03:26:53 PM
Sometimes gas in the oil indicates a blown head gasket but  I doubt it- can be a few other things-like a malfunctioning fuel injector system introducing a very rich mixture-or being you mentioned your bike is RR which to me means you ride in the dirt I would check the air cleaner first a clogged up filter would show all those symptoms
Last Edit: September 26, 2020, 04:16:50 PM by motorboy
It's not a big motorcycle just a groovy little motorbike

Offline Vacarider

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Re: Gas in Oil
Reply #3 on: September 26, 2020, 10:26:14 PM
What happened is a good lesson for anybody who likes storing tools under the seat.
I had a set of tire irons and a trail stand wrapped in a bicycle inner tube under the seat.
The vibrations caused the tools to inch forward passed some less-than-perfect physical obstacles and make contact with the positive battery terminal which was slightly exposed because I had run an additional circuit off of it.
The result was a short circuit that made the bike stop at speed and I assume the gas and fumes to push past the piston rings into the engine.
At least this is what I assume must have happened.
Certainly preventable and my fault for not doing a better job with the electrical and securing the tools.

Offline Mikey66

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Re: Gas in Oil
Reply #4 on: September 27, 2020, 06:31:15 PM
I had a similar thing happen to a race bike I was “storing” in a hallway.
People walking by would twist the throttle (perhaps while making “brm brm” noises). I think, though not sure, this caused raw gas to enter the cylinder (pumper carb, and the intake valves must have been open) and seep past the rings into the sump.
Even though I did change the oil in the spring, it developed a nasty knock in the bottom end after the first race and wrote off the crank bearings by the end of the season.