Originally Posted by mike05

I had that problem once and it was just a vacuum hose...

Originally Posted by beardo

yup!! could be lots of shish in truth!!lol

Originally Posted by KillTheStreet

Have you noticed fuel coming out the exhaust?

I see your "bump" starting? Does that mean push starting? A dead battery can be a big problem on a fuel injected bike.

I would first look for aftermarket parts controling your fuel supply. Do you have a power commander or anything that changes your fuel mapping on the bike? If so reset it to stock mapping asap. I'm also guessing you bought this as a used stunt bike, and I'm guessing it was not ran all the time as well. Ok, I get that it is a used stunt bike because someone bypassed the tip over sensor. I'm guessing it sat for a long time because it has a dead battery.

Have you checked your fuel pressure regulator? Its a return regulator that allows/controls the amount of gas back into the gas tank. If its blocked it will over pressure the injectors & flood the engine by turning the key on when the fuel pump primes. You can watch this happen if you take of the airbox. Just take it off & turn the key while watching inside the cylinders. If you see any gas go into the cylinder you can bet its the fuel pressure regulator. I would take it off the fuel rail (has a vacuum line going to it) and clean it out or replace it. If it is not dirty or gummed up from varnished gas, maybe you have a vacuum leak and your not pulling a vacuum hard enough to redirect the fuel back to the gas tank, dumping the gas directly into your cylinder. To check vacuum, pull the hose from the regulator and if fuel is dripping/squirting out then you have a vacuum problem. There should not be any fuel in the vacuum line.

Wow there are so many things tied to a fuel injection system eh?

Also where exactly is the oil touching your plugs? Inside the cylinder or outside? This is a seperate issue and sounds to me like a bad head gasket or bad piston rings if the oil is inside the cylinder. A less likely cause could be a slightly bent valve and worn valve guide.

Also if you replace/clean the fuel pressure regulator your going to have to adjust your idle screw, I'm betting it is turned up to help the bike run with the problem. Your idle may be in the 4k range with a good fuel pressure regulator if your bike idles normal with a bad fuel pressure regulator.

To clean your regulator it should be small vacuum housing with a retaining ring on top and a diaphragm and spring on the inside, take it apart and clean in gasoline or another varnish solvent and reassemble.

One last little thing, if there is gas in your crank case oil, change it. This will happen with flooding and is common. Gas will reduce the lubrication qualities of the oil and your going to cause more damage to other parts. I would not recommend riding with that oil in it for more than a few minutes. You should check your magnetic collector in your oil drain for metal shavings. This may also give more clues to what all is wrong.

Good luck, Jah be with cha!