Chevrolet Cobalt Service & Repair Manual: Compression Pressure

When inspecting cylinder compression, the engine should be at room temperature, the throttle should be open, the spark plugs removed and the battery at full charge. The lowest reading cylinder should not be less than 70% of the highest and no cylinder reading should be less than 100 psi. Turn ignition key until engine cranks through four compression cycles per cylinder. Normal compression builds up quickly and evenly to specified compression on each cylinder.
    Camshaft R&R
    Removal 1. Loosen vent hose clamp at air cleaner resonator, air cleaner intake duct clamp at air cleaner outlet resonator. 2. Loosen air ...

    Connecting Rod R&R
    1. Rotate the crankshaft to a position where the connecting rod bolts are the most accessible, Fig. 1. 2. Mark the connecting rod an ...

    See also:

    Chevrolet Cobalt Service & Repair Manual. Emission Control Service Reminder Indicators (SRI) Reset Procedures
    Change Oil, Change Oil Now Or Change Oil Soon Messages After changing the engine oil, the system must be reset as follows: 1. Turn ignition to RUN with engine off. 2. Press INFORMATION and RESET buttons on Driver Inform ...

    Chevrolet Cobalt Owners Manual

    Chevrolet Cobalt Service Manual


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