Chevrolet 4.3L V6 Generic Misfire P0300 And Cylinder 5 or 6 FIXED!!!!!

In this video, we troubleshoot and find the reason why the mysterious cylinder 5 and 6 were misfiring. This came about after we spent a ton of money and time trying to figure out what was causing the issue.

[@mmstevens3519]

With bad lifter didn't it make noise. Tapping or knocking

[@CountyAuto]

No, I wish it did it would’ve saved me time and money because then I wouldn’t be replacing half of the ignition system in order to fix the misfire.

[@detroitjohn4724]

WHAT YEAR VAN ?

[@CountyAuto]

2007-2009 if memory serves me right