Temecula Smog Test
Diesel Smog Test Temecula

DIESEL SMOG CHECK PROGRAM

THE DIESEL SMOG APPLIES TO ALL 1998 AND NEWER DIESEL POWERED VEHICLES UNDER 14,000 GVWR

 

DIESEL INSPECTION PROCEDURE:

  1. VISUAL TEST
  2. OBD II TEST
  3. VISIBLE SMOKE TEST

VISUAL CHECK LIST:

  • POSITIVE CRANKCASE VENTILATION “PCV” OR CRANKCASE DEPRESSION REGULATOR “CDR”
  • DIESEL OXIDATION CATALYST “DOC”
  • DIESEL PARTICULATE FILTER “DPF”
  • NOX ABSORBER
  • EGR
  • FUEL INJECTION
  • TEMPERATURE AND PRESSURE SENSOR
  • WIRING SENSOR/SWITCHES/COMPUTERS
  • VACUUM LINE CONNECTIONS TO SENSORS/SWITHES
  • OTHER DIESEL EMISSION-RELATED COMPONENTS
  • TURBO/SUPERCHARGER, EXHAUST/INTAKE, ETC.

OBD II CHECK:

  • CHECK ENGINE LIGHT “MIL” IS OPERATIONAL
  • MIL ON/OFF
  • OBD READINESS STATUS CODES

VISIBLE SMOKE TEST CONSISTS OF:

  • IDLE TEST
  • IDLE CRANKCASE “CDR/PCV” TEST
  • SNAP TEST