2004 MITSUBISHI ENDEAVOR spark plug

Mixture Check)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. Check that the basic ignition timing is within the standard value.
Standard value: 5° BTDC+/-3°
4. Start the engine and increase the engine speed to 2,500 r/min for 2 minutes.
5. Set the CO, HC tester.
6. Check the CO contents and the HC contents at idle.
Standard value:
CO contents: 0.5% or less
HC contents: 100 ppm or less
7. If the CO and HC contents do not remain inside the standard value, check the
following items:
Diagnostic output Closed-loop control (When the closed-loop control is carried out normally, the
output signal of the heated oxygen sensor changes between 0 - 400 mV and
600 - 1,000 mV at idle.) Fuel pressures Injector Ignition coil, spark plug EGR system and EGR valve leak Evaporative emission system Compression pressure
COMPRESSION PRESSURE CHECK Re
quired S
pecial Tool
:
NOTE: Replace the catalytic converter when the CO and HC
contents do not remain inside the standard value, even
though the result of the inspection is normal for all items.
2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

MB991958: Scan Tool (MUT-III Sub Assembly)
MB991824: V.C.I. MB991827: MUT-III USB Cable MB991910: MUT-III Main Harness A
1. Before checks set the vehicle in the following condition:
Engine coolant temperature: 80 - 95°C (176 - 203°F) Lights and all accessories: OFF Transaxle: P range
2. Remove all of the ignition coils and spark plugs.
3. Disconnect the crankshaft position sensor connector.
NOTE: Vehicles for Canada, the headlight, taillight, etc. remain
lit even when the lighting switch is in "OFF" position
but this is no problem for checks.
NOTE: Doing this will prevent the engine control module from
carrying out ignition and fuel injection.

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

Fig. 21: Disconnecting Crankshaft Position Sensor Connector

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. Cover the spark plug hole with a shop towel etc., during cranking. After the
engine has been cranked, check for foreign material adhering to the shop towel.
5. Set compression gauge to one of the spark plug holes.
WARNING:Keep your distance from the spark plug hole
when cranking. Oil, fuel, etc., may spray out
from the spark plug hole and may cause serious
injury.

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

Fig. 22: Setting Compression Gauge To One Of Spark Plug Holes

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
6. Crank the engine with the throttle valve fully open and measure the
compression pressure.
Standard value (at engine speed of 200 r/min): 1,548 kPa (225 psi)
Minimum limit (at engine speed of 200 r/min): 1,117 kPa (162 psi)
7. Measure the compression pressure for all the cylinders, and check that the
pressure difference of the cylinders are below the limit.
Limit: 98 kPa (14 psi)
8. If there is a cylinder with compression or a compression difference that is
outside the limit, pour a small amount of engine oil through the spark plug
hole, and repeat the operations in steps 6 to 8.
1. If the com
pression increases after oil is added, the cause of the

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

malfunction is a worn or damaged piston ring and/or cylinder inner
surface.
2. If the compression does not rise after oil is added, the cause is a burnt or
defective valve seat, or pressure is leaking from the gasket.
9. Connect the crankshaft position sensor connector.
10. Install the spark plugs and ignition coils.
11. Use the scan tool MB991958 to erase the diagnostic trouble codes.
NOTE: This will erase the diagnostic trouble code resulting from
the crankshaft position sensor connector being
disconnected.
2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

Q: Is there more noise on the customers radio?
YES: Check all power and ground connections. If all connections are in
good condition, consult the radio manufacturers service center.
NO: The observed noise is normal.
INSPECTION PROCEDURE 13: Noise is Detected with Engine Running. DIAGNOSIS
CAUTION:
Never connect a noise filter to the high tension
cable (spark plug wire). Spark plug wires
incorporate resistors which have the effect of
suppressing noise. If a spark plug wire is found
to be causing noise, it must be replaced. Confirm that the noise is not from an external
source. Noise prevention should be performed by
suppressing strong sources of noise first.
NOTE: Voltage surges can be induced in the electrical system by
the collapse of a field (i.e. When power is removed from the
coil in an A/C compressor clutch). This induced voltage
surge will radiate a Radio Frequency (RF) signal that is
picked up by the audio unit. In the case of the compressor
clutch a "pop" will be heard through the speakers. The
capacitor, installed on this vehicle, will store the excess
voltage and prevent the production of RF noise. This is
because the capacitor will charge and discharge as the
voltage fluctuates. This has the effect of "attracting" noise
and bleeding it to ground without interfering with the
normal flow of current through the system.

2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Radio With Tape Player & Cd Player - Endeavor

1. Connect and disconnect 4.5 - 9.0 V battery between terminal No. 2 and No. 3,
and observe the ohmmeter whether there is continuity or not.
2. If results do not agree with the table below, replace the primary coil and
ignition power transistor assembly.
Fig. 4: Identifying Power Supply Continuity Chart

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
SECONDARY COIL CHECK 1. Disconnect the ignition coil connector.
2. Remove the ignition coil and install a new spark plug to the ignition coil.
3. Connect the ignition coil connector.
4. Ground the side electrode of the spark plug and crank the engine.
5. Check that spark is produced between the electrodes of the spark plug.
6. If no spark plug is produced, replace the ignition coil with a new one and
recheck.
7. If spark is produced with the new ignition coil, replace the old one as it is
faulty. If no spark is produced again, the ignition circuit is suspected as faulty.
Check the ignition circuit. NOTE: It is impossible to check the secondary coil through the
continuity check as a diode is integrated in the secondary
coil circuit of this ignition coil. Accordingly, check the
secondary coil in the following procedure.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

SPARK PLUG TEST 1. Remove the spark plug and connect to the ignition coil.
Fig. 5: Removing Spark Plug

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. Ground the spark plug outer electrode (body), and crank the engine.
Check that there is an electrical dischar
ge between the electrodes at this time.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor