[dmx434343]

So i checked my oil lever and it was over full, i can smell gas in the oil. I have an 09 450 r with uni filter MSD and jsr pipe.

What could cause this?

 

[Nastyn8t]

Take the spark plug out and inspect it.... Then do a compression test to see if the rings are good

 

[Narmasil]

compression test doesnt really works on theese bikes since they have automatic decompression system. but you could do a leak down test. If rings were bad the bike should also smoke blue. So im not quite sure how you got fuel down there really. Since the fuel never comes close to the oil anywhere? or am i just tired?

 

[Nastyn8t]

i was thinking the only way would be the rings.......i dont know any other way.

 

[Narmasil]

is it hard to start when its sit for a week or so? was thinking if its leaking fuel thru the injector when its shut off, dripping down the engine past the rings etc?

 

[dmx434343]

it is not hard to start, but it was sitting over the winter so maybe the injector got gummed up and was a bit leaky til i ran it for 10 minutes or so around the block? It def. does not smoke or feel tired. I changed the oil today, i will ride it soon and report if it continues.

 

[WickdYFZ450R]

How was the outcome with the new oil change..

 

[vetrix]

I also would like to know the outcome..

I have a yfz450R aswell and my oil really smells gas. I've heard a few people complaining about the same problem where I live and I don't know what it might be.

I called the dealershit where I bought it and they said it's because the bike is probably running rich but I think he was just trying to get rid of me.

I really don't know what to do, I guess I'll just change the oil and see how things go.

 

[Narmasil]

Cant be that its running rich. I ran E85 on mine wich gives roughly 30% MORE fuel than normally, and my oil never smelled or raised. I wouldnt bother if it just smelled. But if the oil level keeps rising then its time to get worried... Still puzzled why this happens though

 

[husker525]

The only way to get fuel in the oil is past the rings. No other way. On carbed bikes, if the needle and seat are stuck open, or the floats, it can fill the crankcase with gas. On a F.I. bike, if the injector is bad, or the bike was badly flooded at some time, you could get enough fuel past the rings to fill up the oil, even with good rings. With enough time on oil between oil changes, you can have a gas smell to the oil, but it should not be enough to raise the level of the oil.

 

[RPM Restorations]

yeah thats whats happening. then it causes compression below the piston and its hard to start.

 

[benson240b]

just found out i now have gas in my oil. curious about what the outcome of this was and what fixed it or if anybody else has had to fix this what you did

 

[benson240b]

ive got a race this weekend and with work i dont have a lot of time to work on it this week

 

[bpowersgofast]

i am having the same issue. i am buying a new injector and will try to report back with my results asap.

 

[Davis86t]

i am having the same issue. i am buying a new injector and will try to report back with my results asap.

I’m having the same issue. Did the new injector fix the problem?

 

[marvinogle1870]

I need to know the answer as well I also have gas in my oil please if someone could just text me 727-260-1347 I wrecked my brain trying to figure out why I have gas in my oil any hints please text me thanks