13B-18
DIESEL INJECTION
High pressure pipe: Check
K9K
13B
a
CHECK
a Remove the front engine cover.
a Prime the fuel circuit using the manual priming pump
(1) until the transparent pipes are filled with fuel (au-
tomatic degassing).
a Check that there are no fuel leaks.
a Connect the Diagnostic tool to the vehicle.
a Deal with present faults,
a Run command AC 626 - high pressure circuit
sealing test.
a Check that there are no fuel leaks.
a Deal with the causes of any possible leaks.
a Use the Diagnostic tool to check for stored faults;
deal with these and clear them as necessary.
a Disconnect the Diagnostic tool.
Equipment required
Diagnostic tool
WARNING
Check that there are no diesel leaks after each
operation.
Note:
the Diagnostic tool can be used for testing the
high pressure circuit with the engine running.
This command can be used to run fault finding
on a leak due to an incorrectly fitted or tightened
union. This command only works if the engine
coolant temperature is over 60˚C. The fault find-
ing procedure does not reveal small leaks
caused by insufficient tightening.
Note:
Respect the repair precautions (see Diesel
injection: Precautions for the repair) .
24732
Note:
Certain faults will prevent this test from being
carried out: deal with them first.
Note:
The engine automatically runs a cycle of four
accelerations and decelerations to lower the rail
pressure.
WARNING
Do not leave anything on the side of the engine
housing during the test phase (significant vibra-
tion).
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