1998 ZR500 Bogging and Backfiring issue
I got a 1998 zr 500 this year. Got it to run and idle fine. Just took it for its first ride and it bogs intermittently and backfires sometimes afterward. After it takes off it goes good but when I let off the throttle to make a turn and try to start again it will fall on its face but then take off again after feather the throttle. I checked for spark, both plugs looked good and had blue spark. I pulled off the kill switch plug and that didn't solve it. The ground going from the speedometer to by the handlebars is off, it looked like the prior owner flipped open the hood too fast and broke the ground wire. I saw in some of the forums that grounding could be part of the issue, but I wasnt sure if that was the only ground. I am new to snowmobiles and would greatly appreciate any help.