Stratus L4-2.4L VIN X (1998)
Spark Plug: Description and Operation
Resistor spark plugs are used in all engines and have resistance values of 6,000 to 20,000 ohms when checked with at least a 1000 volt tester. Do
not use an ohm meter to check the resistance of the spark plugs. This will give an inaccurate reading.
Faulty or fouled spark plugs may perform well at idle speed, but frequently fail at higher engine speeds. Faulty plugs can be identified in a number
of ways: poor fuel economy, power loss, decrease in engine speed, hard starting and, in general, poor engine performance.
Spark plugs also malfunction because of carbon fouling, excessive electrode air gap, or a broken insulator. SEE Powertrain
Management/Ignition System/Testing and Inspection/Procedures, for spark plug diagnosis.
CAUTION: Always tighten spark plugs to the specified torque. Over tightening can cause distortion and change the spark plug gap. Tighten
spark plugs to 28 Nm (20 ft lb) torque.
