Chevrolet Cobalt Service & Repair Manual: Exhaust Manifold, Replace


1. Remove exhaust manifold heat shield.
2. Remove oxygen sensor.
3. Raise and support vehicle.
4. Remove manifold to exhaust flex decoupler mounting bolts.
5. Pull down and back on exhaust pipe in order to disconnect pipe from exhaust manifold.
6. Lower vehicle.
7. Remove exhaust manifold to cylinder head mounting nuts.
8. Remove exhaust manifold, clean sealing surfaces.
9. Reverse procedure to install. Torque exhaust manifold to cylinder head mounting nuts to 106 inch lbs., in sequence, Fig. 1.

Fig. 1 Exhaust manifold tightening sequence

    Exhaust Manifold Gasket R&R
    1. Remove the secondary air injection bolts (2) and nuts (1), Fig. 1. 2. Remove the secondary air injection studs (3 and 4), Fig. 2 ...

    Front Cover, Replace
    Removal 1. Raise and support vehicle. 2. Remove front fender liner. 3. Turn drive belt tensioner clockwise. ...

    See also:

    Chevrolet Cobalt Owners Manual. Malfunction Indicator Lamp
    A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors operation of the fuel, ignition, and emission control systems. It ensures that emissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner environment. This light should come on ...

    Chevrolet Cobalt Owners Manual

    Chevrolet Cobalt Service Manual

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