Timing will affect all the cylinders, not just one. A sticky valve or a broken intake valve spring is also a possibility. Once you find which cylinder is missing, pull the valve cover and inspect the springs. That's also a good time to do a valve adjustment.
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!
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