Ok guys to start off with Im an old time mechanic, and never really ran into hydraulic lifters until this 86 f150 302 efi v8, anyway Im clueless as to how this works Im as far as the push rod pushes up but thats it, nothing else I see makes sense... also theres a nut where the rocker arm would pivot to push down on the valve... Could anyone shed any light on how any of this stuff works? Any diagrams or even drawings would be extremely useful...Thanks guys for any insight on how this works. Im trying to chase dwn a knocking noise coming from the valve covers, and it increases with engine rpm... usually on older cars you could just adjust the lash and be good to go, but this is a whole new ballgame.
"The way to win an atomic war is to make certain it never starts."
General Omar Bradley (1893 - 1981)