Fuel Problem? efi???

[Gncc]

I Race the bikes on sunday and i bought a 08 kfx 450 for the saturday quad program at the gncc's, i've had it for about a year now, im new to efi as my bike doesn't have it, Seems as if its not getting fuel? Turn the key and hear the fuel pump whiz, then the starter will crank but nothing will happen, im getting plenty of spark and i just replace the injectors. still nothing, sometimes we can get it to run if we bump start it then it runs fine untill you want to fire it up again. seems like a known issue with these 2008's i've also been told the gas tank had a recall in 08? or the fuses go when you go with an aftermarket exhaust? Almost ready to find a Kx450f carb and throw on it

so does anyone have a solution to this problem?

[bmann400]

check the ide adjustment. turn it clockwise till it stops. it should be around 27 clicks counter clockwise. your tps sensor could be set@ the wrong voltage. it .should be @ .62 volts. Make sure the choke is either pulled out or pushed in. I Make sure you dont give it any throtle when starting it. I had the same problem and it was the aftermarket fuel controller. Hope this helps.

[pratzac]

Make sure you are not touching the gas at all. They have a safety switch in it and makes sure the gas is not applied.

[Duster]

Sometimes the cable gets hung and they won't start.
Sometimes it is the TPS output voltage.

And sometimes it can be from valve clearance issues.... or a broken or stretched decompression spring on the exhaust cam.