Hi first post apologies for any issues i haven't used a forum in forever.
Ive just purchased an XS650 Herritage Special that was imported from the US and every fault i try to fix seems to multiply.
When i purchased it the previous owner had fitted VAPE electronic ignition, MikesXS headers and mufflers (2-2), XS pod filters and some knock off Mikuni carbs with 180 30 jets and it ran pretty meh, big bog at 2k rpm but would pull past it and the float kept flooding on 1 cylinder when not running so i pulled them off and fitted the original Vacuum mikuni carbs. It ran better and wouldnt bog but didnt want to pull past 4k rpm unless you backed off slightly and slowly rolled the throttle. So following that i tried new plugs and found the spark is abysmal, so bad that the old blackened plugs had better spark than the new ones and is nothing like the "fat blue spark" that Vape ignition describe. So next i swapped the old cracked coil with a new boxed one that came with the bike and now it runs even worse, it backfires when idling, often wont idle, has absolutely no power wouldn't pull the skin off a custard AND IT STILL WON'T REV.
I know what you're thinking "ah its the jets because of the pods and exhaust" yeah i would think that too IF it wasnt for the fact that when i swap the plug leads side to side, the backfiring also swaps sides with it which means to me it has intermittent spark.
The only thing i done before all this happened was add a killswitch for a roadworthy which the previous owner never connected, can these VAPE systems not work with a kill switch? (It just cuts the earth) I doubt its the killswitch since that should mean intermittent spark on both sides not just one.
My next check for tommorow is making sure the leads are properly seated in the coil spikes
Cheers Guys
Ive just purchased an XS650 Herritage Special that was imported from the US and every fault i try to fix seems to multiply.
When i purchased it the previous owner had fitted VAPE electronic ignition, MikesXS headers and mufflers (2-2), XS pod filters and some knock off Mikuni carbs with 180 30 jets and it ran pretty meh, big bog at 2k rpm but would pull past it and the float kept flooding on 1 cylinder when not running so i pulled them off and fitted the original Vacuum mikuni carbs. It ran better and wouldnt bog but didnt want to pull past 4k rpm unless you backed off slightly and slowly rolled the throttle. So following that i tried new plugs and found the spark is abysmal, so bad that the old blackened plugs had better spark than the new ones and is nothing like the "fat blue spark" that Vape ignition describe. So next i swapped the old cracked coil with a new boxed one that came with the bike and now it runs even worse, it backfires when idling, often wont idle, has absolutely no power wouldn't pull the skin off a custard AND IT STILL WON'T REV.
I know what you're thinking "ah its the jets because of the pods and exhaust" yeah i would think that too IF it wasnt for the fact that when i swap the plug leads side to side, the backfiring also swaps sides with it which means to me it has intermittent spark.
The only thing i done before all this happened was add a killswitch for a roadworthy which the previous owner never connected, can these VAPE systems not work with a kill switch? (It just cuts the earth) I doubt its the killswitch since that should mean intermittent spark on both sides not just one.
My next check for tommorow is making sure the leads are properly seated in the coil spikes
Cheers Guys
