what could cause gas to come out the exhaust pipe?

[arcticcat38]

i thought i had high fuel pressure on my 02 zr 800 so i changed the fuel pressure regulator only to find out my fuel pressure was right in the 1st place. (my sled gets awful milage. 5-7 depending on the riding. everyone else i know that has this sled gets 10-15.) i still have gas coming out the exhaust though. what could cause this? i've checked the reeds, checked the tps, changed the fuel pressure regulator, had the injectors checked, checked the compression thinking mabey i had bad rings. the sleds runs fine for the most part. what else could it be? PLEASE HELP ME THIS IS DRIVING ME NUTS!!!!!!!! not to knock the dealers but they cant figure this out.

 

[BigRed118]

What pressure are you running? Are your injectors clean so that they can close? Are you throttle bodies adjusted properly? Just a couple of things that I would check. Do you have any mods at all?