Test Description
WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.
If an injection nozzle is not properly delivering fuel into pre-combustion chamber of cylinder, driveability could be greatly effected, or a Diagnostic Trouble Code (DTC) could be set. If other diagnosis indicates, or if injection nozzles are suspected of not properly delivering fuel, they should be tested. Typically, a nozzle failure can be detected by using injector balance test. Nozzle testing is comprised of the following checks: