Reply To: Rear cylinder problems GV250 efi Aug 26, 2025 at 2:33 PM #20583 mehran👤 Member🖊 Topic Author Topics: 1Replies: 3Country: IranBike Model: 2014 Aquila I have not done any coil swapping but will do. Seems easy enough! Could the weak spark couse the loud noise coming from the rear cylender?
