Spark Plugs - Isuzu 1999 RODEO Workshop Manual

6E1–414 RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION

Spark Plugs

Removal Procedure
Type: NGK BPR6ES–11
Spark Gap : 1.05 MM (0.040")
Spark Plug Torque : 25 Nm (18 lb ft)
1. Disconnect the negative battery cable.
2. Remove four bolt holding spark plug cover plate to top
of valve cover, and remove the cover plate.
3. Pull ignition wire using hocks attached to end of spark
plug cable.
4. Remove the spark plug.
Inspection Procedure
1. Check the insulator for cracks. Replace the spark
plug if crack are present.
2. Check the electrode condition and replace the spark
plug if necessary.
If the spark plug electrodes and insulators are fouled with
carbon or oil, the engine will not operate efficiently.
There are number of possible causes:
f Fuel mixture is too rich.
f Oil in the combustion chamber.
f The spark plug gap is not set correctly.
If spark plug fouling is excessive, check the fuel and
electrical system for possible causes of trouble. If fuel and
electrical system are normal, install spark plug of a higher
heat range which have the same physical dimensions as
014RX043
the original equipment spark plug.
The following symptoms are characteristics of spark
plugs that are running too hot:
f Fuel mixture is too lean.
f Heat range is incorrect.
014RX045
If vehicle usage does not conform to normal driving
conditions, a more suitable spark plug may be
substituted.
If fuel and electrical system are normal, in most cases of
this sort, the problem can be corrected by using a colder
014RX046
014RX047