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Mitsubishi Space Star. Manual - part 12

ENGINE <F9Q1> –

Sealants/Special Tools

11C-3

SEALANTS

Item

Specified sealant

Remark

Oil pan

MITSUBISHI GENUINE PART
MD970389 or equivalent

Semi-drying sealant

Beam cam cap

MD970389 or equivalent

Fly wheel bolt

3M stud locking 4170 or equivalent

Anaerobic sealant

SPECIAL TOOLS

Tool

Number

Name

Use

MB991502

MUT

-II

sub

assembly

Measuring the drive belt tension

Checking the idle speed

MB991668

Belt tension meter
set

Measuring the drive belt tension
(Used together with the MUT-

)

MD998747

Crankshaft pulley
holder

Holding the crankshaft pulley

MB991614

Angle gauge

Tightening of the crankshaft pulley bolt

Tightening of the cylinder head bolts

MB990767

End yoke holder

Holding the camshaft sprocket

MD998719

Crankshaft pulley
holder pin

MB996042

Oil seal installer

Installation of camshaft oil seal

ENGINE <F9Q1> –

Special Tools

11C-4

Tool

Use

Name

Number

MB996015

Flywheel stopper

Locking the flywheel

MB996038

Oil seal installer

Installation of the crankshaft rear oil seal

MB996040

Oil seal installer

Installation of the crankshaft front oil seal

GENERAL
SERVICE
TOOL
MZ203827

Engine lifter

Supporting the engine assembly during
removal and installation of the transmission

MB991453

Engine hanger
assembly

ENGINE <F9Q1> –

On-vehicle Service

11C-5

ON-VEHICLE SERVICE

VALVE CLEARANCE CHECK AND ADJUSTMENT

The valve clearances have to be checked/adjusted in the
following sequence.

Cylinder at point of balance

Cylinder being checked/
adjusted

Measure the valve clearance.

Standard value:

Cold engine

Checking

Adjusting

Intake valve mm

0.15 – 0.20

0.20

Exhaust valve mm

0.35 – 0.45

0.40

If the valve clearance is outside the standard value, adjust
by replacing the tappets using the following procedure.

Re-measure the places which were outside the standard
value, and make a note of the measurement value.

Measure the thickness of the tappet (X) with a micrometer.

Select a tappet which will bring the valve clearance to then
standard value based on the measurement value.

Thickness of tappet for adjustment =

Thickness of tappet installed during inspection (X)
+ (measurement value – standard value)

NOTE
(1) Measure the thickness of the tappet pad with a

micrometer.

(2) Always use new tappets.
(3) Tappets are available in thickness from 7.550 mm

to 8.150 mm, increasing by increments of 0.025 mm.

Remove the camshaft, and then install the selected tappet.

Install the camshaft.

After rotating the camshaft once, check that the valve
clearances are at the standard values.

Cylinder at point
of balance

Cylinder being
checked/adjusted

Micrometer

Adapter

Thickness
(X)

ENGINE <F9Q1> –

On-vehicle Service

11C-6

IDLE SPEED CHECK

Before inspection, set the vehicle to the pre-inspection
condition.

Turn the ignition switch to the “LOCK” (OFF) position and
the connect the MUT-

to the diagnosis connector.

Start the engine and check that the idle speed is at the
standard value.

Standard value: 750

10 r/min

If the idle speed is not at the standard value, refer to
GROUP 13D – Troubleshooting.

COMPRESSION PRESSURE CHECK

Before inspection, check that the engine oil, starter and
battery are normal. In addition, set the vehicle to the
pre-inspection condition.

Disconnect the all injector connector.

NOTE
Doing this will prevent carrying out fuel injection.

Remove all of the glow plugs.

Cover the glow plug hole with a shop towel etc., and after
the engine has been cranked, check that no foreign material
is adhering to the shop towel.

Caution
(1) Keep away from the glow plug hole when cranking.
(2) If compression is measured with water, oil, fuel,

etc., that has come from cranks inside the cylinder,
these materials will become heated and will gush
out from glow plug hole, which is dangerous.

Set compression gauge to one of the glow plug holes.

Crank the engine and measure the compression pressure.

Limit: Min. 2000 kPa

Measure the compression pressure for all cylinders, and
check that the pressure differences of the cylinders are
below the limit.

Limit: Max. 400 kPa

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 glow plug hole, and repeat the
operations in steps 6 and 7.
(1) If the compression increases after oil is added, the

cause of the 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.

Install the glow plugs.

10. Connect the injector connectors.

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