sixfiftyone
XS650 New Member
Thanks you in advance for helping me get my 79 XS650 Special back on the road again.
My bike was running great until yesterday. I was riding and got stuck in a downpour, bike was running fine for 20 or so miles, and suddenly my right cylinder started firing intermittently and then stopped firing altogether.
I let the bike sit and dry in the sun for a day figuring it could be an electrical issue. it started right up, both cylinders firing, but when revving the engine right cylinder backfires like crazy and dies out. When the Tachometer hits 4K both cylinders fire again. On idle both cylinders fire, but when I let the clutch out the right cylinder pops and stops firing.
Since my problem came about with the rain I thought it could be an electrical issue; the right side coil tested fine and I'm getting spark. Could timing be an issue?
Any ideas on what's wrong with my bike? It seems like if it was an electrical problem I wouldn't be getting spark at all. Do you guys think this could be a carb sync issue? I wonder if maybe I suddenly developed a vac leak around carbs somewhere.
My bike was running great until yesterday. I was riding and got stuck in a downpour, bike was running fine for 20 or so miles, and suddenly my right cylinder started firing intermittently and then stopped firing altogether.
I let the bike sit and dry in the sun for a day figuring it could be an electrical issue. it started right up, both cylinders firing, but when revving the engine right cylinder backfires like crazy and dies out. When the Tachometer hits 4K both cylinders fire again. On idle both cylinders fire, but when I let the clutch out the right cylinder pops and stops firing.
Since my problem came about with the rain I thought it could be an electrical issue; the right side coil tested fine and I'm getting spark. Could timing be an issue?
Any ideas on what's wrong with my bike? It seems like if it was an electrical problem I wouldn't be getting spark at all. Do you guys think this could be a carb sync issue? I wonder if maybe I suddenly developed a vac leak around carbs somewhere.