Toyota Cressida/Corona/Crown/MarkII 1970-1982 Repair Guide

Intake Manifold

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REMOVAL & INSTALLATION



20R and 22R Engines


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Fig. Fig. 1 View of the intake manifold and gaskets-20R and 22R engines

  1. Disconnect the battery.
  2.  
  3. Drain the cooling system.
  4.  


CAUTION
When draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

  1. Remove the air cleaner assembly, complete with hoses, from the carburetor.
  2.  
  3. Disconnect the vacuum lines from the EGR valve and carburetor. Mark them first to aid in installation.
  4.  
  5. Remove the fuel lines, electrical leads, accelerator linkage, and water hose from the carburetor.
  6.  
  7. Remove the water by-pass hose from the manifold.
  8.  
  9. Unbolt and remove the intake manifold, complete with carburetor and EGR valve.
  10.  
  11. Cover the cylinder head ports with clean shop cloths to keep anything from falling into the cylinder head or block.
  12.  
  13. Installation is the reverse of removal. Replace the gasket with a new one. Tighten the mounting bolts to the figure given in the Torque Specifications chart. Tighten the bolts in several stages working from the inside bolts outward. Remember to refill the cooling system.
  14.  

M Series


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Fig. Fig. 2 Exploded view of the intake and exhaust manifolds-2M and 4M engines

For fuel injected models refer to the Cylinder Head removal section of this section.

  1. Drain the cooling system.
  2.  


CAUTION
When draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.

  1. Remove the air cleaner assembly, complete with hoses, from its mounting bracket.
  2.  
  3. Remove the distributor cap.
  4.  
  5. Remove the upper radiator hose from the elbow.
  6.  
  7. Remove the wiring from the temperature gauge sender.
  8.  
  9. Remove the following from the carburetor: fuel lines; vacuum line; choke stove hoses, emission control system hoses (and wires); accelerator torque rod; and automatic transmission linkage (if so equipped).
  10.  
  11. Remove the emission control system lines and wiring from the manifold when equipped with a vacuum switching valve on engines with EGR, remove the EGR lines and fittings.
  12.  
  13. Remove the water by-pass hose from the manifold.
  14.  
  15. Unbolt and remove the manifold, complete with the carburetor.
  16.  
  17. Installation is in the reverse order of removal. Remember to replace the gaskets with new ones. Tighten the mounting bolts to the specifications given in the Torque Specifications chart.
  18.  

Tighten the bolts, in stages, working from the inside out.

 
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