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Reply to "Holley carburettor adjustment needed"

Compression on all cylinders is good, so I'm sure none of the valves are bent but that doesn't completely rule out a camshaft fault. For example, there may be an error of 180° on the cam (360° on the crankshaft) for one or more cylinders, the valves do not touch the pistons but the spark occurs at the wrong time. It's not totally impossible.

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