Recent content by jwin

  1. J

    1981 idling issue

    Is it possible it's a combination of the idle mixture screws being too lean and an air leak?
  2. J

    1981 idling issue

    Adjusted the idle speed screw, now it's idling at about 1500rpm. I've taken it out for a ride twice in the past week. If I let the bike idle for more than a few seconds, the RPM drops until the bike dies. It doesn't seem to matter what the idle speed is set to, it will still drop in RPM until...
  3. J

    1981 idling issue

    Thanks all. Just an update on where I'm at: I've been mostly doing electrical work and have managed to get the electric starter working again. I let it run until warm and did a compression test - 138psi in the left, 140psi in the right. I've opened the idle mixture screws about 2 1/4 turns from...
  4. J

    1981 idling issue

    Hey everyone, So I bought an 81 that was left in a garage for 2 years with fuel in the tank. I've cleaned the carbs (which were already pretty clean), flushed the tank, cleaned the petcock, unseized the engine (pouring MMO in the plug holes and turning the crankshaft), changed the oil and...
  5. J

    New bike doesn't run, how much should I pay for repairs?

    Hey guys, I'm about to buy a 1981 XS400 with 6000km on it. Previous owner was an older gentleman who bought it for his son, son didn't use it and it sat in a garage for 2 years. Cosmetically the bike is in decent condition except for rust on the frame, a few bolts and the bottom of the exhaust...
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