Buick Regal 1997-2000

Basic Fuel System Diagnosis


When there is a problem starting or driving a vehicle, two of the most important checks involve the ignition and the fuel systems. The questions most technicians attempt to solve first are, "Is there spark-" and "Is there fuel-" Answering these questions often lead to solving many basic problems. For ignition system diagnosis and testing, please see Section 2. If the ignition system checks out and there is a spark at the spark plugs, then you must determine if the fuel system is operating properly and that fuel is getting to the injectors.