MPV 2WD V6-3.0L SOHC (1992)
It is important to use spark plugs with the correct heat range for the application. If a spark plug is used with too high a heat range for a particular
application, pre-ignition may occur. Spark plugs with heat range that is too cold for the application will tend to foul easily.
4.
RESISTOR TYPE - Most spark plugs are resistor type plugs. These have a carbon resistor built into them to provide radio static suppression and
to ensure a higher sparking voltage. Resistor type spark plugs are always used in vehicles with computerized engine controls because the reduced
radio static is less likely to interfere with operation of sensitive components.
5.
NON RESISTOR TYPE - These are rarely used any more due to their poor compatibility with electronic engine control systems. Also, spark
plugs without auxiliary resistance built in will allow the coil to discharge at much lower voltages (5K-10K volts) resulting in a weaker (lower
energy) spark than electronic ignitions are capable of. These type plugs are used in older breaker point type ignition systems that do not have
computer controls and are not designed to produce the high sparking voltages required by today's emission controlled gasoline engines.
