rockinjon
XS400 New Member
Hey guys, here's one for ya:
My bike quit running and I traced the issue to a bad TCI box. (I've gone through 3 of them in the last year!!!)
I found a used one on ebay, and plugged it in, and it started. I gave it throttle, and it died. Restarted it, let it idle, and tried giving it throttle again, and it died once more. It kept dying each time no matter what. I though the carbs must dirty, so I completely disassembled them, and carb dipped all the parts (sans rubber ones) (let them sit for a several hours each), blew out the holes with carb cleaner, and re assembled them.
Put them back on, and there was no change. The tiniest bit of throttle and it dies. But I also noticed my petcock is leaking too. So I took that apart and inspected it, but there are no tears in the diaphragm. I thought if it was a vaccuum issue, running it on PRIME would bypass that just to see if it would rev up, right? It does the same thing no matter what setting. I know it's getting plenty of fuel, and both cylinders are sparking. They aren't super bright sparks though... Could that new TCI be "weak" or something? Coils going bad? I doubt it's a carb issue as they are both clean enough, and the petcock on PRIME should be dumping fuel in there even if it's a petcock issue... any ideas?
Thanks for the help guys!
My bike quit running and I traced the issue to a bad TCI box. (I've gone through 3 of them in the last year!!!)
I found a used one on ebay, and plugged it in, and it started. I gave it throttle, and it died. Restarted it, let it idle, and tried giving it throttle again, and it died once more. It kept dying each time no matter what. I though the carbs must dirty, so I completely disassembled them, and carb dipped all the parts (sans rubber ones) (let them sit for a several hours each), blew out the holes with carb cleaner, and re assembled them.
Put them back on, and there was no change. The tiniest bit of throttle and it dies. But I also noticed my petcock is leaking too. So I took that apart and inspected it, but there are no tears in the diaphragm. I thought if it was a vaccuum issue, running it on PRIME would bypass that just to see if it would rev up, right? It does the same thing no matter what setting. I know it's getting plenty of fuel, and both cylinders are sparking. They aren't super bright sparks though... Could that new TCI be "weak" or something? Coils going bad? I doubt it's a carb issue as they are both clean enough, and the petcock on PRIME should be dumping fuel in there even if it's a petcock issue... any ideas?
Thanks for the help guys!