Chevrolet Cobalt Service & Repair Manual: Engine Tune Up & Performance

Engine Liters/ CID/ Type

SFI/OBD II system. Equipped w/MIL. Engine Liters/ CID/ Type Certif- ication Type Trans. Type ...

Compression Pressures

1. Ensure engine is at room temperature and battery is fully charged. 2. Disconnect wiring from ignition module and remove spark pl ...

See also:

Chevrolet Cobalt Service & Repair Manual. Emission Control System Inspection
Caution: Do not remove any component of the engine emission control system. Operating the engine without the engine emission control system intact will reduce fuel economy and engine ventilation. This will weaken engine performance and shorten engine life. The vehicle ...