Isuzu Trooper (1998-2002 year). Service manual - part 400

6D2–4

IGNITION SYSTEM (6VE1 3.5L)

CAUTION: Ignition coil assembly #6 is different
from ignition coil assembly from #1 to #5. Ignition
coil assembly #6 is short type. So, note it when
installing ignition coil assembly of #6.

060RY00002

Legend

(1) Long type Ignition Coil Assemblies (#1 

∼

 #5)

(2) Short type Ignition Coil Assembly (#6)

2. Connect battery ground cable.

6D2–5

IGNITION SYSTEM (6VE1 3.5L)

Spark Plug

Removal

1. Remove spark plugs.

Inspection and Repair

The spark plug affects entire engine performance and
therefore its inspection is very important.

D

Check electrode and insulator for presence of cracks,
and replace if any.

D

Check electrode for wear, replace if necessary.

D

Check gasket for damage, replace if necessary.

D

Measure insulation resistance with an ohmmeter, and
replace if faulty.

D

Check spark plug gap, Replace spark plugs if
measured valve is out of standard.

Spark plug gap : 1.0 – 1.1 mm (0.4 – 0.043 in)

011RS011

NOTE:

– Do not adjust the spark plugs gap without new

spark plugs.

– Do not damage to  tip of spark plugs.
– Do not cleaning the spark plugs. If require the

cleaning it due to heavy dirt, it is allowed only 20
seconds  to be used spark plug cleaner.

D

Check fuel and electrical systems if spark plug is
extremely dirty.

D

Use spark plugs having low heat value (hot type plug)
if fuel and electrical systems are normal.

D

Use spark plugs having high heat value (cold type
plug) if insulator and electrode are extremely burned.

Sooty Spark Plugs

Much deposit of carbon or oil on the electrode and
insulator of spark plug reduces the engine performance.

Possible causes:

D

Too rich mixture

D

Presence of oil in combustion chamber

D

Incorrect spark plug gap

Burning Electrodes

This fault is characterized by scorched or heavily oxidized
electrode or blistered insulator nose.

Possible causes:

D

Too lean mixture

D

Improper heat value

Measuring Insulation Resistance

D

Measure insulation resistance using a 500 volt
megaohm meter.

D

Replace spark plugs if measured value is out of
standard.

Insulation resistance: 50 M

W

 or more

011RS010

Installation

1. Spark plugs

D

Tighten spark plugs to the specified torque.

Torque: 18 N·m (1.8 kg·m/13 lb ft)

6D2–6

IGNITION SYSTEM (6VE1 3.5L)

Crankshaft Position Sensor

Removal

1. Disconnect battery ground cable
2. Wiring connector from crankshaft position sensor.
3. Remove crankshaft position sensor from cylinder

block.

012RS008

Installation

1. Install crankshaft position sensor into the cylinder

block.
Before installation,apply small amount of engine oil to
the O–ring.

Torque: 10 N·m (1.0 kg·m/87 lb in)

2. Reconnect wiring connector to crankshaft position

sensor.

6D2–7

IGNITION SYSTEM (6VE1 3.5L)

Main Data and Specifications

General Specifications

Ignition System

Ignition Form

Electronic Ignition System (El system) with Crankshaft position Sensor

Spark Plug

Type

K16PR–P11
RC10PYP4
PK16PR11

Plug gap

1.0 mm – 1.1 mm (0.0394 in – 0.0433 in)

Torque

18 N·m (1.8 kg·m/13 lb ft)

Torque Specifications

N·m (kg·m/lb ft)

E06R200018