Valve lash adjustment
My '87 seems to run and sound better with the valve lash set at .003" instead of .004". I've been setting it to this clearance for 4 years now with no problems. Apparently, like every clearance spec. there is a tolerance. On the inside of the engine deck lid there is a sticker regarding the emission control system and interestingly it states valve lash .004"+/- .002". Sounds like there is some tolerance allowed.
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