86 pickup smog failed, please help. Did not pass NO
#1
86 pickup smog failed, please help. Did not pass NO
I have a 86 toyota pickup that failed smog the NO's were way to high. What could it be? Engine is 22r.
Last edited by raiders42673; 09-20-2010 at 08:04 AM.
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I would try to retard the timing a bit. Also, make sure your thermostat is working correctly and coolant is topped off, etc, etc.
You can also "tweak" the airbox meter (or carb) a bit to richen it up.
Last edited by tgergen; 09-20-2010 at 08:00 AM.
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