arupert

Stabilitrak and #6 cylinder misfire:.......pull valve cover and one of the #6 rockers loose and never moved. pulled cylinder head, found collasped AFM lifter...thought AWESOME!.....problem found. Replaced lifter and reinstalled everything else. Cranked it up, same idiot lights and still misfiring. Pulled the valve cove to watch the rockers....both moved up and down 2 cycles and just stopped!....no movement at all????? What could possibly be controlling the lifters or preventing them from moving?......struggling with figuring oout whats going on here....any help would be greatly appreciated!