Why Lifter clack?

Hello guy's this is on a 350 vortec roller lifter engine. I was trying to diagnose a miss and this is something I have not come across before hoping someone can give me the answer. It might be that the lifters need to be readjusted. Here's the dilemma, engine running, if I pull the plug wire off #1,( I haven't checked all of the others yet) a lifter starts to clack, put the plug wire back on it goes away. Anyone came across this before.

Got it figured out, it was the plug wire arching, sounded like a lifter clack.

Quote:

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Originally Posted by jimbos56

Got it figured out, it was the plug wire arching, sounded like a lifter clack.

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HA, go figure. :eek:

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I'm not alone!

I'd thought I was the only one that wasted hours barking up the wrong tree!

( ...and thanks for having the balls to publicly admit your initial diagnosis was wrong.)