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Subject:Re: Last gasp: low compression exhaust valve can't pass smog
From:Robert Fisher
Date:Fri, 18 Jun 2010 10:29:06 -0700

--snip--
Does anybody have a comment on setting the idle higher for the smog test and
therefore reducing the number of low compression misses?
--snip--

I tend to watch the smog computer (having nothing else to do) during smogs
and it seems to me the acceptable range for idle RPMS is pretty small; no
more than 250/300 difference. So here (in Cali) if you were consistently out
of that range, you would fail the smog right there. The shop doing the smog
isn't allowed to make adjustments/repairs, so you risk being out your $50
bucks for nothing. : (

YMMV.

Cya,
Robert