just finish gettin my bike painted and put it back together so when i went to crank it , it just turn over and acts like it wants to start but dont and then sometimes it will backfire does anyone knows whats wrong

 

Getting fuel? I had something the same occur, and it was the vent tube clogged. You also may want to check the small hose that goes from the engine to the fuel on off switch. If you detach all the lines, and suck on that tube you should see the fuel coming out of the larger tube attached to the on off switch. Note if you take apart the on off switch, run a permanent marker across one side so you know how to put it back together.

 

alright mess with the bike now it just turns over and acts like it wants to start but dont

 

i can get the bike started and it will run for a min then cut off do u think its a lack of fuel that will cause it

 

My F2 had a similar issue, it would start run and rev high from choke then die after 5 min. I had taken it a part for the chain to be fixed and decided I would explore the world of the F2. Changed my air cleaner, and made some minor adjustments, took the fuel on off switch apart, and that was clean also. Put it all back together and the same ish happend again weeks later.

Here is how you can check for the fuel.. it gets a bit hairy but i think you can do it.

There are four tubes going to the fuel tank. (1) a Large one going from the on off switch to the engine, (2) a small one going from the on off switch to the lower half of the engines left side. (3) a smaller tube at the rear of the tank just hangin for pressure release. (4) a larger one at the rear of the tank for venting.

I would recommend taking the whole tank off with the tubes. (Leave the large main fuel line attached to the bike, and disconnect via fuel on and off switch.

After removing the tank if you turn the on off switch to (ON), and suck on the little tube coming off the fuel on off switch. Fuel should pour out of the large main (OUT) on the fuel switch. If it is not flowing you are not getting fuel. Basically everytime you suck on that lil tube you should see fuel coming out, and stop once you do.

If nothing happend then you have the answer. I would also suck, and push on the main attached to the engine. making sure air comes out (FREELY) of the two hoses rapped around the air box.

If not then thats ur problem.

the answer to my problem. Clogged vent or (large rear tube), and clogged fuel release (lil tube attached to fuel on and off) resulting in dead engine. Once i dropped fuel into the lines my baby started right up.