What does a whole set of plugs cost? What did a compression test find? How about a cylinder balance test? What's the resistance of each plug wire? Sun Electric Company got it right 70 years ago- - - - -"We test- - - -not guess!"
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!