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Home >> Isuzu >> 1987 >> Impulse Base, Standard, MSG4K >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Evaporation System >> Component Testing >> Canister Purge Control Valve >> Except Impulse
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Except Impulse

  1. Remove canister from vehicle. Apply 7.5 psi air pressure to port marked "VC". Air should not leak from diaphragm. See Fig 1 .
  2. Apply and maintain 15 in. Hg vacuum to port marked "PURGE". Gradually apply vacuum to "VC" port. Purge valve should begin to open when 7.1-8.7 in. Hg (1.6-3.2 in. Hg on I-Mark) vacuum is applied to port "VC". Replace valve if it does not operate as outlined.
Fig 1: Testing Purge Control Valve
G37913Courtesy of ISUZU MOTOR CO.
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