My truck had a "miss" when I got it. It turned out to be a loose rocker arm. The bolt had backed out enough to where it was no longer opening the intake valve. Pop your valve covers off and give it a look
Hi Koch13351! Did you, ( I'm probably dreaming here, ) by any chance run a compression check? I did, and cyl#1 reads ZERO. All the others were 265-285 - pretty low by book info- but still balanced enough for a "PASS"