94 Toyota 4Runner barely failing smog?

BLaBla

New member
I live in CA and I have a 94 4Runner that barely fails smog at idle. It passes at 2500rpm.

At Idle it fails only on the HC (PPM)
Max: 100
Ave: 17
Meas: 224

I have not done a tuneup on it. It smells like it might be running a little rough, Perhaps a low idle misfire? What are your suggestions.
 
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