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Home >> Buick >> 1992 >> Roadmaster Base >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Ignition System >> OPTI-Spark Distributor (5.7L VIN P) >> Removal & Installation

Removal & Installation

  1. Disconnect negative battery cable. Drain cooling system. Disconnect Intake Air Temperature (IAT) sensor harness connector. Remove knock sensor. Remove air intake duct. Remove serpentine belt. Remove coolant hoses to water pump assembly.
  2. Disconnect coolant temperature sensor harness connector. Remove water pump-to-engine block mounting bolts (6). Remove water pump assembly. See Fig 1. Remove crankshaft harmonic balancer. See Fig 2. Remove belt tensioner. Remove spark plug wires from distributor. See Fig 3.
  3. Disconnect 4-terminal ECM connector to distributor. Remove distributor mounting bolts (3). Pull distributor forward until distributor shaft disengages from engine. Mark top surface of distributor shaft for reassembly purposes. Remove coil as necessary. See Fig 4.
  4. To install, ensure mark made on distributor shaft during removal is on top or facing up. To complete installation, reverse removal procedure. Refill coolant and check for leaks. Tighten distributor hold-down bolts to 96 INCH lbs. (11 N.m).
Fig 1: Removing & Installing Water Pump & Related Components
G00286674Courtesy of GENERAL MOTORS CORP
Fig 2: Removing & Installing Crankshaft Harmonic Balancer
G00286676Courtesy of GENERAL MOTORS CORP
Fig 3: Identifying Distributor Wiring Locations
G00286675Courtesy of GENERAL MOTORS CORP
Fig 4: Removing & Installing Coil & Related Components
G00286677Courtesy of GENERAL MOTORS CORP
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