Valve
Hi Bob, the noisy valve will probably be easy to spot once the valve cover is off. You may be able to tell just by feeling the slack in the rocker arm which one is making the noise. It wouldn’t hurt to check them all now that the engine has been broken in. I was asked to do a valve adjustment on a 235 in a pickup that was quite noisy. Whoever was in there before me failed to tighten up one of the lock nuts and the adjuster unscrewed to the point that the pushrod was very loose. I was surprised that the pushrod hadn’t jumped out of place.
Paul
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