I wrecked my f4i back in December, it ran home from the crash but it spent some time sitting before I got it to the shop. Shop replaced a broken crankcase cover, and soon as I got it back I spent some time on the plastics and then took it for a ride. It started fine three days ago, but then I installed a two brothers slip on, a K&N air filter, and a DynoJet PCIII USB. Now it won't fire at all. The starter is cranking just fine and the battery has plenty of charge, but it just won't combust and smells like raw fuel coming out the exhaust. Sounds like a spark plug thing, but all four going out at once?

Tired of looking at it, I wanna ride it. Any idea what's going on with it?

 

Did you program your power commander to your bike? have you had it started since you installed it?

 

I didn't get it programmed for the two bro's pipe, but it should've already been set up for a stock f4i anyway. I thought that might be the problem, so I already tried removing the PC but same results, so I just plugged it back in. Still won't fire

 

Could it be the spark plugs? I had a thought that the old spark plugs with eight k miles on em could've fouled when I tried to run a new richer mix with the PC

 

never mind. turned out to be the simplest, dumbest thing. yesterday i bought and installed a trickle charger, left it overnight, and just for kicks tried to start her today. she fired up first try. i had just taken the battery to get charged at the shop, but she wouldn't fire. i guess they just barely charged it enough to run the lights, gauges, starter motor, etc, but not quite fire the spark plugs.

NOW what can i do to keep this BS from happening again? I would hate to find out I have a bad alternator or something after a smoke break in the middle of a 200 mile ride somewhere in BFE.

 

Test your r/r, stator and load test the battery. That should be a reasonable start.