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Home >> Jeep >> 1988 >> Comanche Eliminator, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L 6-CYL - VIN [M] & 4.2L 6-CYL - VIN [C] >> Removal & Installation >> Intake & Exhaust Manifold (4.0L) >> Removal

Intake & Exhaust Manifold (4.0L): Removal

  1. Disconnect negative battery cable. Remove air inlet from throttle plate assembly. Disconnect throttle, cruise control and throttle valve (A/T models) cables (if equipped).
  2. Disconnect and mark all vacuum and electrical connectors from intake manifold. Disconnect fuel lines at fuel rail. Fuel lines are removed by squeezing the 2 retaining tabs against the fuel line and pulling the fuel line from the connector. Use caution as these fuel lines are under pressure.
  3. Loosen drive belt tensioner and remove drive belt. Remove power steering pump and bracket from intake manifold. Remove fuel rail retaining bolts. Remove fuel rail and injector assembly.
  4. Remove intake manifold heat shield. Disconnect EGR tube fittings. Disconnect exhaust pipe from manifold. Disconnect oxygen sensor. Remove retaining bolts and remove manifolds.
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