Question about Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: tappet problem
the check prosidure requires you engine be cold engine at top dead center at #1 cylinder and cams timing markes aligned to markes. check only intake and exaust lifters with lobes in the released position. intake is .15-.25mm and exaust is .25-.35 mm. rotate the engine 180deg. to check the remaining cylinders. if exsesive play is exsperianced. You must remove cam shafts, and add a new shim to remove the clearence. this includes the timing chain.most engine machine shops have these shims.really suggest you go online for a sevice manule. you can ruin this engine if not performed properly. This is a zero clearence engine! (no clearence between valves and pistons.) any more questions i can help you with just send to my e mail.
Posted on Dec 29, 2011
one or both of two things can cause this
low oil pressure to lifters
or there clearance is not adjusted correctly
clearance should be adjusted with engine hot and idle'ing using a go /no go shim of proper thickness
Posted on Jun 29, 2012
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