LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1991 >> Value Van 4.3 Z, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> A-3, No-Start Diagnosis >> Engine Controls - Basic Testing >> General Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

General Inspection

  1. Ensure proper starting procedure is being used.
  2. Visually check vacuum hoses for splits, kinks and improper connections. See underhood emission control information label. Check ignition wires for cracking, hardness and improper connections at both distributor cap and spark plugs.
  3. Remove spark plugs. Check and replace as necessary.
  4. Remove distributor cap and check for moisture, dust, cracks, burns and arcing to ground through coil mounting screws or rotor.
  5. Try to turn distributor shaft by hand.Drive gear pin may be broken.
  6. If vehicle has been exposed to very cold temperatures, ensure oil is proper viscosity and not contaminated with gasoline.
scientia non olet · About LEMON Manuals