Troubleshooting a rough idle on a 2006 Suzuki GSX-R750

Took apart my 2006 Suzuki GSXR750 to troubleshoot a rough idle issue seen the last time it was taken out for a ride. Idle was rough and seemed like it was not running on all 4 cylinders. Bike would stall at a light at times and run rough at low RPMs. Would seem to run normal occasionally with more throttle, but not 100% of the time. Poor power under load.

Suspected it was a bad coil pack on one of the cylinders, so disassembled bike to look into the coils and check plugs. All 4 coils did not show any significant differences in coil resistance. Input was about 2 ohms and output was about 13 kohms on all 4 coils. Spark was verified on all 4 cylinders and spark plugs looked normal; no fouled plugs and all 4 were a normal tan color.

Re-assembled and will take for a test ride to see if the issue has gone away or is intermittent. Coil packs can be problematic when they heat up in engine bay after many miles of use and cause intermittent electrical contact internally which will cause the coil to misfire.

#Suzuki #GSXR750 #MotorcycleRepair #Hero8Black #GoPro