2004 MITSUBISHI ENDEAVOR engine

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

Fig. 23: Erasin
g Dia
gnostic Trouble Codes With S
pecial Tool MB991958

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
.
MANIFOLD VACUUM CHECK 1. Start the engine and allow it to warm up until the temperature of the engine
coolant reaches 80 - 95°C (176 - 203°F).
2. Connect an engine tachometer.
3. Disconnect the ventilation hose from the positive crankcase ventilation (PCV)
valve, and connect a vacuum gauge to the ventilation hose.
Fig. 24: Disconnecting Ventilation Hose From Positive Crankcase
Ventilation Valve

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
4. Plug the PCV valve.
5. Start the en
gine and check that idle s
peed is within s
pecification. Then check

2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor

the vacuum gauge reading.
Idle speed: 680+/-100 r/min
Minimum limit: 60 kPa (18 in Hg)
LASH ADJUSTER CHECK If an abnormal noise (chattering noise) suspected to be caused by malfunction of the
lash adjuster is produced immediately after starting the engine and does not
disappear, perform the following check.
1. Start the engine.
2. Check if the abnormal noise produced immediately after starting the engine,
changes with the change in the engine speed.
If the abnormal noise is not produced immediately after starting the engine or it
does not change with the engine speed, the lash adjuster is not the cause for the
noise.
Therefore, investigate other causes. The abnormal noise is probably caused by
some other parts than the engine proper if it does not change with the engine
speed. (In this case, the lash adjuster is in good condition.)NOTE: An abnormal noise due to malfunction of the lash adjuster
is produced immediately after starting the engine and
changes with the engine speed, irrespective of the engine
load. If, the abnormal noise is not produced immediately
after starting the engine or does not change with the engine
speed, or it changes with the engine load, the lash adjuster
is not the cause for the abnormal noise.
NOTE: When the lash adjuster is malfunctioning, the abnormal
noise is rarely eliminated by continuing the warming-up of
the engine at idle speed.
However, the abnormal noise may disappear only when
seizure is caused by oil sludge in the engine whose oil is
not maintained properly.
2004 Mitsubishi Endeavor Limited
2004 ENGINE Engine - Endeavor