Join Date: Nov 2018
Location: Lake Elsinore, CA
I had that issue with my 1980 Narrow Glide: That damn near drove me nuts.
The guy i bought the bike from was about 6'8" @ 330 lbs. easy, My buck fifty azz was the difference.
The prior owner had removed the gauges. When he removed the Tachometer, he just cut the wire and let it go in the neck of the triple tree.. He was heavy enough that the bike didn't shake around much under him. My pencil frame well, the bike was, lets just say, not quite so stable. That wire would bounce around in the neck and ground out intermittently!
Wile stopped, there was no way in he** to get it to back fire. Rolling on California's cement freeways: It sounded like a rolling gun battle.
That was the most difficult troubleshooting that i have ever done. Not to mention it took months to find... Intermittent electric problems SUCK!
I'm sure this isn't any help to your backfiring problem. Just know it CAN be WORSE!
Look for stupid simple stuff first! (I lern't my lesson)...
2014 Ultra Classic
All LED lighting otherwise bone stock.
K-I-S-S Keepin' It Simple Stupid.
NRA LIFE Member
Drinking and riding is fine ... just don't do it in that order