[andrearrr]

unfortunately it is not. the fuel goes down during operation. On Saturday, before entering the circuit, control oil find is the same as in past Monday. during the week, oil level has stagnated. Saturday evening after a day at the track, the level rose, and smells of gasoline. Here in Italy there are many cases. I think you is not felt, because the temperatures are higher. Here with me now it's winter, temperatures are below 10 ° C (50 ° F). this phenomenon is related to the temperature of the engine. If I cover the radiators, the level does not increase further.

[Charlie C]

Andrearrr, you have an issue that completely baffles me. If gas is getting into the oil while it's running, it's beyone my comprehension. Here in Ohio, the temp has been below 25F for the past month. The 09 EFI 450 has been ridden about 3-4 times a week and no issues. It has well over 100hrs on it. Has your MIL light on the kill switch been coming on and staying on?

[124]

The issue must be either when idling, warmup, or directly after the machine is shut off. I cannot see gasoline leakdown during normal operation. I could see it during idle warmup though. And I'm not sure how to solve the problem...

[Charlie C]

The issue must be either when idling, warmup, or directly after the machine is shut off. I cannot see gasoline leakdown during normal operation. I could see it during idle warmup though. And I'm not sure how to solve the problem...

Immediately after shut down if anything. As long as it's running, I can't see how. It would be huffing black smoke from the amount of fuel it would take to leak past the fire and rings. Really doesn't make sense.

[124]

There are 3 strokes other than compression that fuel could potentially get past the rings. I'm not saying it's THE cause, but I believe it could be possible. Especially at low RPM with on a cold bike. Like I said, I'm not really sure what is the cause and how to help, just speculating like everyone else.

I agree that it is likely just after shutdown...

[Charlie C]

I understand where you're coming from, but also keep in mind that these things fire ever other revolution, so unburnt fuel "should" burn off regardless of a compression stroke or not. But I'm totally with you 124! This is one of those issues that I want that bike in my garage to really find out what's going on! I have family in Italy, maybe it's a good time to go visit!

[andrearrr]

thanks charlie and 124. excuse my absence. I now have 25 hours of activity in the motor. the problem has decreased with the increase of air temperature (now 15 ° C), and the partial closure of the radiators. but a small percentage of the problem still exists. I'm desperate. Here in Italy there are hundreds of cases. Honda has issued a circular on the subject, which says that the problem is sometimes caused by the temperature. What I do not understand is why two identical bikes, the same year, on the same track, same day, one has a problem and the other is not.

I will keep you updated.

you do not feel this problem?

[124]

Can you get your hands on the circular? Please scan and post.
I'd be interested in reading it.

[Charlie C]

thanks charlie and 124. excuse my absence. I now have 25 hours of activity in the motor. the problem has decreased with the increase of air temperature (now 15 ° C), and the partial closure of the radiators. but a small percentage of the problem still exists. I'm desperate. Here in Italy there are hundreds of cases. Honda has issued a circular on the subject, which says that the problem is sometimes caused by the temperature. What I do not understand is why two identical bikes, the same year, on the same track, same day, one has a problem and the other is not.

I will keep you updated.

you do not feel this problem?

That's because no 2 bikes are alike. The bikes could be built side by side with the exact same parts and one will be totally different than the other. There are too many variables for 2 to be exactly alike.

[cruisers450]

iam not sure what you guys manuals,say but i was noticing in my 11 250 manual it tells you to blip the throttle a few times before hitting the kill switch.not sure if it says that in the 10 manuals or the 450 one.

[Charlie C]

It does in the 09 450 owners manual also.

[jobber01]

i had a 2013 450r with gaz in oil. when engine run oil raise.my engine drop below 50 celcius and Honda says injection start to choking.I want to put a thermostat to solve the problem.....anybody can help me?