Question about 1994 Toyota Pickup

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Smog problem well, it didn't pass smog this year. i've spoke to a mech. but he says that it could be many of things, from a CAT, or EGR or etc............from your experience what will be the most effective and/or common item to replace. (also, i've had the head gasket blow twice, both times i had the head shaved, now i'm wondering might the compression ratio be to high causing the smog failure, i haven't noticed any pinging but what do you think)???

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  • Justin May 11, 2010

    Is this the original engine? What part of emissions did it fail? Did it fail Nox or Hydrocarbons?

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I think it should be pcv or egr. no idea what a ecg might be.... unless you are having a heart attack or something.
if its pcv...its a small fitting attached to the valve cover, it has a small valve in it and a hose going to the intake. new one is under 10 bucks, and its 1 minute to change.
egr...a little more involved. have someone you know with a little automotive knowlege check it for you. the check is easy, if no good could be valve, passages, etc. what does the smog fail sheet say exactly????

Posted on Jun 24, 2008

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