GM Caprice 1990-1993 Repair Guide

Exhaust Manifold

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See Figures 1, 2 and 3



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Fig. Fig. 1: Left side exhaust manifold removal - 5.0L (VIN Y) engine



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Fig. Fig. 2: Right side exhaust manifold removal - 5.0L (VIN Y) engine



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Fig. Fig. 3: Exhaust manifold bolt torque sequence - 5.0L (VIN E) engine

REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Raise and support vehicle safely.
  4.  
  5. Disconnect crossover pipe at the exhaust manifold.
  6.  
  7. Lower the vehicle.
  8.  
  9. Tag and remove spark plug wires and, if necessary, remove air cleaner.
  10.  
  11. Disconnect hoses, pipes, and accessory brackets, as required.
  12.  
  13. Remove oil level indicator and tube, if necessary and/or oxygen sensor electrical connection, if equipped.
  14.  
  15. Remove exhaust manifold bolts, studs, locks and washers.
  16.  
  17. Remove the exhaust manifold and gasket.
  18.  

To install:
  1. Clean mating surfaces on manifold and cylinder head.
  2.  
  3. Place exhaust manifold and gasket into position on cylinder head.
  4.  
  5. Install shields, washers, locks, studs and bolts. Tighten bolts to 25-26 ft. lbs. (34-35 Nm) and studs to 20 ft. lbs. (27 Nm).
  6.  
  7. Connect oxygen sensor electrical connector, if equipped and install oil level indicator tube, if removed.
  8.  
  9. Connect any hoses, pipes and accessory brackets which were removed.
  10.  
  11. Install air cleaner, if removed, and connect spark plug wires.
  12.  
  13. Raise and support vehicle safely.
  14.  
  15. Connect crossover pipe to the exhaust manifold and tighten nuts to 15 ft. lbs. (20 Nm).
  16.  
  17. Lower vehicle and connect the negative battery cable.
  18.  
  19. Start engine and check for leaks.
  20.  

 
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