need some mechanic help

Blaster 01

New Member
Nov 12, 2010
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Fort Mill SC
well my 1999 f150 4.2l has a knock in the top end, im pretty sure its a lifter but does anyone know how hard it is to replace one??
 
shouldnt be that hard. i know some stuff on those 4.0s and 4.2s are a pain in the ass. but i dont think it would be that hard. take your valve covers off and go from there. but are you sure its a lifter tick? and not just an exhaust leak