i was having some welds touched up on my subframe and when i was reinstalling it i had to put that black plastic tray back in with that harness and now my bike is misfiring... any suggestions on what to do????

 

May have pinched a wire going back together? Since you did not say it was at idle or WOT throttle position, I'd run the same 'ol routine. Start the bike with less than a few seconds or less of running. I'm talking literally, as soon at the bike lites up, shut it down. Check each header pipe to see who is cold? You then narrow it down to a plug, wire, plug cap, etc.

 

well i started it up once it was misfiring and i shut it off right away. started it up again and it revved to probably 13,000 rpms in a second then i shut it off and i havent done anything since then

 

13 grand tells me all cylinders are running. Don't know how close that weld was to any kind of wire harness area. Don't know about how many wires you had to remove or bump into to create the miss once you reinstalled the cover. Did you get something down the intake, as in a dirty piece that may have been blown away by the high rev? It was just something stuck on a spark plug gap and now things are cool?

Hard to diagnose over the net without taking it for a ride and duplicate your complaint.

 

thanks paz for the help, much appreciation. My subframe was completely off the bike and welded at a seperate location. and i took my tail back off just now and when i was standing on the left side of the bike there is a relay looking thing with two wires running to it that i wiggled when the bike was running at low rpms (bike still misfiring at this time) and the rpms shot right up again. idk?? this **** blows especially with yoface coming up

 

Hey Lance, this is what it's all about. Anytime. But...

Wait a minute... You touch two wires, the bike shoots up to red line without touching the throttle? That is scary! I mean, unless I am reading the diagnosis wrong, we have a download of the shop manual? We can trace those two wires, the relay, and see if that heads to the throttle position or actuator type opening where you fly by wire kind of I do not know your bike at all?

I'm just banging heads we figure out dishit. So, we fly by wire? See, that relay might be a fly by wire and who knows without that book, I need bike instead. So, I'm sort of in the middle of this and if we have Rely/FBW, I'd say the miss and the rev could be related if you never touched that throttle..