this is not SOLIDS engine, there is no LASH setting, !
the engine has a chain, and a set of hydraulic bucket valve lifters.
the chain can be bad or any lifter, can be dirty and collalpesd.
when the engine is dead and no oil pressure the lifters are normally collapsed, when you start the engine. oil pressure does 2 things
all lifters pump up, and clearance goes to zero. (no noise)
then the cam tensionor, pumps up (they fail) and chain noise ends.
some noise is ok , cold start, but most end after a minute or 2.
ever read the manual? its here.
use a stethoscope to find out 1 thing , which is it the chain or lifters making that noise.
ive even runs engine with the valve covers off (messy , use a blanket to catch oil flying) to find the true cause.......
read the 2.5L here. its close. (mech. parts)
read the Alldata virtual FSM.http://www.scantool.net/software/alldata-diy-1-month-subscription.html