yamaha xs400 carburetor

  1. J

    1981 Yamaha XS400 left cylinder not firing

    Hello I have a 1981 Yamaha xs400 that I bought for 50 dollars and rebuilt. The latest problem is left cylinder does not fire. What I've done so far is switch the spark plugs, and ignition coils that didn't change anything. Then I did a compression test they were both around 150 psi. Finally I...
    • Jeremy
    • Thread
    • carburetor yamaha yamaha xs400 yamaha xs400 carburetor
    • Replies: 3
    • Forum: The Garage
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