1982 750 Spectre
Hello, I'm new to the forum. Lots of great stuff on here! I have a 1982 Kawasaki Spectre 750n1. It has 32000 miles on it. Here is my problem. The bike will ONLY start/fire up when the petcock is on the PRI setting. The petcock only has RES/ON/PRI settings. Also, i have to have it full choke. It then starts, and runs, but then starts to rev really high RPM's like 5000 to 6000. I back the choke off to about 1/2 choke, and it idles to around 2000 RPM's. I then turn the petcock to the ON position. Bike still runs for a couple of minutes on 1/2 choke, but then dies. If i try to turn the choke off, it dies instantly. It seems like the only way it will stay running, is the petcock on PRI, and full to 1/2 choke. I drop it in gear, and start to let out the clutch and it just dies. Try to give it throttle, and it dies. Won't start again unless petcock is on PRI, and full choke. I recently cleaned the carbs, and they weren't really very dirty. Made sure they are seated good and the air filters are seated good. Seems almost like a petcock issue to me, how it only runs when on PRI, turn to ON, and it will eventually die, no matter what. I've tried adjusting the idle screw, in/out, does not seem to make any difference.