Land Rover Discovery: Engine System - General
Information Cylinder
Compression Test - Ingenium i4 2.0l Diesel (G1817137)
/ General Procedures
GENERAL EQUIPMENT
Compression tester (petrol/diesel)
Land Rover diagnostic equipment
CHECK
CAUTIONS:
- Before disconnecting any components, make sure the area is clean
and free from foreign material. When disconnected all openings
must be sealed.
- The vehicle battery must be in good condition and fully charged
before carrying out this procedure.
NOTES:
- This procedure contains some variation in the illustrations
depending on the vehicle specification, but the essential
information is always correct.
- This procedure contains illustrations showing certain components
removed to provide extra clarity.
![Engine System - General Information Cylinder Compression Test - Ingenium i4 2.0l Diesel (G1817137) General Procedures](images/books/227/index48.gif)
Print graphic number E176229 for use later in this procedure.
Remove the glow plugs.
Refer to: Glow Plugs (303-07B Glow Plug System - INGENIUM I4
2.0L Diesel, Removal and Installation).
CAUTION:
Make sure the fuel injection system is disabled before
carrying out a cylinder compression test. Failure to follow this
step may result in damage to the vehicle.
![Engine System - General Information Cylinder Compression Test - Ingenium i4 2.0l Diesel (G1817137) General Procedures](images/books/227/index49(13).jpg)
Disconnect the fuel injector electrical connectors.
Crank engine for approximately 5 seconds to remove any remaining
fuel in the cylinders.
![Engine System - General Information Cylinder Compression Test - Ingenium i4 2.0l Diesel (G1817137) General Procedures](images/books/227/index410(15).jpg)
Install the compression test gauge.
Torque: 10 Nm
NOTE:
This step requires the aid of another technician.
![Engine System - General Information Cylinder Compression Test - Ingenium i4 2.0l Diesel (G1817137) General Procedures](images/books/227/index411(15).jpg)
- Crank the engine for 10 seconds, use illustration E176229 to
record the figure displayed on the compression test gauge.
- Make sure the pressure is released from the compression
test gauge after each cylinder recording.
- Remove the compression test gauge. Repeat the procedure
for the remaining cylinders.
The minimum cylinder compression reading recorded must be
within 10% of the maximum cylinder compression reading
recorded. If the difference across the cylinders is higher than 10%
please contact dealer technical support (DTS) for further assistance
Connect the fuel injector electrical connectors.
Install the glow plugs.
Refer to: Glow Plugs (303-07B Glow Plug System - INGENIUM I4
2.0L Diesel, Removal and Installation).
Using Landrover approved diagnostic equipment, read and clear
any diagnostic trouble codes (DTCs).
Engine System - General
Information Cylinder
Head Distortion (G1802943)
General Procedures
CHECK
![Engine System - General Information Cylinder Head Distortion (G1802943) General Procedures](images/books/227/index412(15).jpg)
Using a suitable metallic straight edge and feeler gauge, measure
the cylinder head face in the areas illustrated. Note the maximum
value.
CAUTION:
Machine the minimum thickness of material from the cylinder
head to meet specification. If a selection of cylinder head
gaskets are available, increase the thickness of the cylinder
head gasket by one size.
NOTES:
- Prior to having the cylinder head machined, prior approval
is required by Jaguar or Land Rover engineering.
- If the cylinder head requires machining, this must be
carried out by a local engineering company.
If the cylinder head exceeds the maximum value (0.2mm), the
cylinder head must be machined.
Engine System - General
Information Exhaust
Manifold Cleaning and
Inspection (G61240)
General Procedures
GENERAL PROCEDURES
- Inspect the cylinder head joining flanges of the exhaust manifold for
evidence of exhaust gas leaks.
- Inspect the exhaust manifold for cracks, damaged gasket surfaces,
or other damage that would make it unfit for further use.
READ NEXT:
CAUTION:
The compressed air line supply pressure must be between 3.5 and 12
bar (50 and 175 psi) for the smoke test equipment to function
correctly. Do not exceed this pressure. Failure to follow this
General Procedures
GENERAL EQUIPMENT
Pneumatic vacuum gun
CLEANING
WARNINGS:
Do not carry out any repairs to the fuel system with the engine
running. Failure to follow this instruction may result i
SEE MORE:
Installation
Torque: 9 Nm
CAUTIONS:
Make sure that new nuts and bolts are installed.
Nuts and bolts must be tightened with vehicle at normal
ride height.
Renew Part: Lower control arm nut and bolt.
Torque:
Stage 1: 70 Nm
Stage 2: 240º
CAUTIONS:
Make sure that a new Upper arm nut and bo
General Procedures
GENERAL EQUIPMENT
Pneumatic vacuum gun
CLEANING
WARNINGS:
Do not carry out any repairs to the fuel system with the engine
running. Failure to follow this instruction may result in personal
injury.
Do not smoke or carry lighted tobacco or open flame of any type
when working o