compression too high

[88WarriorBoy]

Yeah I'm with deadlast on this one and do u also have the clutch and parking brake sensors disabled?

 

[jtyler1998]

Cleaned the carb today and it seems to try to start a little better but still won't run for more than a few seconds. The plug is fouling too. Backfiring is not very bad now.

 

[88WarriorBoy]

then it is your air fuel mixture, I had that same problem with mine it would foul plugs

 

[Mathius]

then it is your air fuel mixture, I had that same problem with mine it would foul plugs

Thats what I was try'n to say earlier.. lol
It's not getting enuf air.
I dunno why though?? It could be a host of things...

 

[Gen1Pat]

Try turning the fuel on the fill the bowl, then turn it off and try to crank it. Will help to prevent it from flooding some. Maybe pull the air box lid off and give it another try. Have you tested the condition of the spark? Just and inline spark tester will help to tell the story. Or, ground the plug against the cylinder and watch the spark when you crank it. Could be week and the backfiring is from the fuel loading up in the cylinder, and the combo of extreme compression of so much fuel, and it gets off one good sprak and makes it backfire.