Hello guys, looking to see if anyone has any experiences relating to mine and how they went about remedying them.

About 2 weeks ago I rode home from work in the rain. I have a 2 hour commute and about 1 hour of it was through said rain. Got home, parked it, went to sleep. Woke up next day, started warming up the bike and after ~45 seconds of idling it lost the rear cylinder and gas/oil was coming out the rear pipe. I didn't feel like dealing with it at the time, so I let it sit over night.

Next day it started up and idled fine, rode for a little bit with 0 problems.

Today I started it up and rode around to check out a few houses nearby for sale, maybe like 20-30 minutes of riding. On the way home it died in traffic. Started it back up, about a half mile down the road it died again. I noticed a bunch of gas leaking out the breather and the oil was leaking out of the tank and now smells of gas. Luckily I was only about a mile away from home and limped it back on one cylinder, with the other occasionally firing and causing a surge. Got home, pulled the plugs, with the front cylinder noticeably hotter than the rear.

Im stripping it down now to being going over it, was wondering if anyone has any insight..Thanks !

I bought the bike last May with 1000 miles. It has a Fuel Moto Micro EFI device, American Freedom 2-2 pipes and an Arlen Ness Breather. I don't lug the thing and normally cruise at ~2800 rpm. Has mostly seen back roads / interstate use at NY speeds.

 

Sounds like a fuel injector problem. It is staying open on the rear cylinder & pumping it full of fuel.

 

look at the micro efi device, sounds like its lost. doesn't know where the timing is at. But first there has to be codes. Anytime you get a misfire like this, there will be codes, check them first. Don't start taking things apart. I certainly don't think its mechanical, and you don't know either. so go at this methodically, and in a proper order. You don't even know if there is compression at the cylinder, although I seriously doubt that is the issue. Start with codes, and get back here

 

Gas in your oil to the extent that it's running out from being over full? You have big problems. Do a compression test.

 

rereading the post, this is a high probability

 

Thank you guys for the responses.

It's throwing 1 code - P1356 - Rear cylinder no combustion.

Continuing on, lol

 

Its a misfire code, what you can do is swap the injectors and see if the problem moves to the front. With all the fuel in the oil, it can't be an ignition failure. Is the plug real wet back there?

 

If the FuelMoto Micro is a piggyback device, I would unplug and bypass it, and see how the bike runs.

 

okay, So i swapped the injectors and started it up. Same problem as a week ago, gas/oil out the rear pipe. For the heck of it, I switched back from NGK resistor spark plugs back to the factory spec 6r12s just to see. Eventually the bike stopped spewing gas/oil and would idle, but went back to doing the same thing as before - dropping the rear cylinder. This time it started showing PN 001118-01, Which i found no results for.

Next will be to delete the efi tuner, but its time to eat, lol.

 

What kind of air cleaner do you have?