Backfire on acceleration (COLD)
I recently had a problem with my 05 VTX 1300c occasionally misfiring cold on acceleration and slowly worsening.
I'm currently at (Factory pro) 58 pilot,210 main jet,notch 4 on needle,1 1/2 turns out on the fuel/air mix,Pennsylvania,9500 mi.
K&N air filter and double D's.I assumed it was a fuel/air mixture issue being it was only happening in the morning.A possible lean condition?
After a couple weeks of experimenting with different jets and mixtures i had no luck.
I searched the internet and found your post. At first I thought "NO WAY" as i had not touched the
ICM on top of the battery.So for the hell of it I checked it out. I no sooner popped the module out
of its holder and the black wire broke off???,further inspection revealed chaffing on the green wire???
I got the pin connectors out using a threading needle,soldered the wires and pushed them back in.
Test drove and now the bike runs great!!!!! Thanks so much for the info. and thanks to everyone for taking the
time to post your finds. It would have been costly to pay someone to diagnose and repair this and I enjoy figuring
these things out on my own.I hope this helps out someone else as well.