I was cruising to work, going 70-80mph and all of a sudden I had no power, bike was dead. I pulled off to the side, cranked it and it fired up, took off and as i was accelerating 30-40mph it felt like I hit ignition cut or something, then it would accelerate again, then all of a sudden it was dead and wouldn't start back up.


I pulled the plugs, they look fine. I can see fuel spraying if I open the throttle body when I crank it, I can see the valves moving. 23k there is no way it lost compression in all 4 cylinders. The only code that's flashing is the IAT sensor (9 flashes) but I think that's just because it's unplugged as I have the airbox off and map sensor unplugged and stuff.

Please help, this is my daily driver and I need to get it running again. I do have a spare parts bike so if I need any sensors I can swap it from the other bike.

if there is fuel and spark, and I am guessing compression, it doesn't make sense that it wouldn't run, unless the ignition timing was off or valve timing. The CCT was just beginning to make some noise but I couldn't see it jumping a tooth!

Help :/

 

Don't assume you have spark until you see it. Sounds like maybe your kill switch took a crap?

 

I would ahve been dead from exhaustion after pushing mine 2 miles lol

 

Agree with jp -- sounds like something in the ignition circuit is crapping out.

 

I've pulled spark plugs out and cranked it and it definitely has spark...

 

Just swapped ECU's, still nothing. I'm going to pull all plugs, do a compression check in each cylinder, then clean the plugs/dry them off, put them back in and put it all together...

Would it not run with the MAP, and IAT disconnected? I tried cranking it but i have those things still disconnected, I can see spark, and smell fuel...

 

Connect all your sensors before trying to run it. Will not run with MAP disconnected ... will run crappy (if at all) with IAT disconnected.

 

It's electrical. Loose battery connection, bad connection in a wiring harness plug, etc. Check the main ground connections, this is a common issue in the headlight harness and the main harness right near the tank, where the green negative wire connections become loose.

 

Do you hear the pump prime? If not check all the connections in the front gray harness down by the left intake. Your problem sounds similar to what mine did.