Workshop Manual

0312 1600 - 0138
4/6
© 11/2004
6
Fuel system
W 07-07-05
2011
Note
Injection nozzle is tight if it does not drip within
10 seconds.
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Note
- If the injection nozzle drips, the injection
valve must be dismantled and cleaned, the
injection nozzle may have to be changed.
- Repairs are not permitted.
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Buzz and jet test
z Switch off the tester’s pressure gauge.
Note
The easy action of the nozzle needle in the
nozzle body is checked by the acoustic buzz
test. Increasing wear in the needle seat of the
injection valves changes their buzz behavior.
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