Darylstewart
XS650 Member
Hey guys. First post.
Just fired up 81 Special for the first time. Completely rewired, new Pamco with Ultimate coil, new plugs, clean carbs, adjusted valves, etc.
Only one pipe gets hot. Both carbs have fuel. Both plugs get spark when held against the engine.
Switched plug wires. No change.
Switched plugs. Now the other cylinder fires, but the one the fired previously does not. Okie dokes, so maybe new plug is faulty?
Grab a couple older plugs, clean em up as best as I can. Replaced the plug that seems to have been the culprit, but still nothing.
Well WTF.
We switch plug sides, and the problem follows.
Now, we pull the good plug, mark it, and set it aside. Install another cleanish older plug. At this point, we verify all of the plug gaps.
Now we have two old plugs in the bike, one we already tried and didn't work. We fire the bike up and the old one we just out it works.
YAY! So we replace the older one that didn't work with the new one that had worked previously. Fires up, the cylinder with that new plug doesn't work now. And it switches when we swap those two plugs.
Well WTF!
Compression in both cylinders is good. If anyone has any clue as to whats going on here, please enlighten!
Just fired up 81 Special for the first time. Completely rewired, new Pamco with Ultimate coil, new plugs, clean carbs, adjusted valves, etc.
Only one pipe gets hot. Both carbs have fuel. Both plugs get spark when held against the engine.
Switched plug wires. No change.
Switched plugs. Now the other cylinder fires, but the one the fired previously does not. Okie dokes, so maybe new plug is faulty?
Grab a couple older plugs, clean em up as best as I can. Replaced the plug that seems to have been the culprit, but still nothing.
Well WTF.
We switch plug sides, and the problem follows.
Now, we pull the good plug, mark it, and set it aside. Install another cleanish older plug. At this point, we verify all of the plug gaps.
Now we have two old plugs in the bike, one we already tried and didn't work. We fire the bike up and the old one we just out it works.
YAY! So we replace the older one that didn't work with the new one that had worked previously. Fires up, the cylinder with that new plug doesn't work now. And it switches when we swap those two plugs.
Well WTF!
Compression in both cylinders is good. If anyone has any clue as to whats going on here, please enlighten!