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  1. jkruegel

    Cant get my YJ to pass CA Smog

    Im here in SOCAL and I bought a 92 YJ with the 4.0L injected motor with the 5 speed manual trans. I have now replaced the CAT, O2 sensor, fuel pressure reg, spark plugs, map sensor, coolant temp senor and thermostat. Ive checked the cylinder compression (150psi to 160psi). Ive used Seafoam in...
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