Back firing out of carb
pull covers and just look at the rockers when you turn over the motor by hand. Even a flat lifters will show a worn out lobe, especially one thats not lifting an exhaust enough to vent the cylinder. Also make sure your firing 18436572 CW
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Also check your timing and make sure your advance plate is actually moving: pull cap and suck on vacuum line, your plate should move and snap back smoothly.
pull covers and just look at the rockers when you turn over the motor by hand. Even a flat lifters will show a worn out lobe, especially one thats not lifting an exhaust enough to vent the cylinder. Also make sure your firing 18436572 CW
Also check your timing and make sure your advance plate is actually moving: pull cap and suck on vacuum line, your plate should move and snap back smoothly.
