15-60
Hydraulic valve lifters, checking
Special tools and equipment
Feeler gauge
Wood or plastic wedge
Note:
Hydraulic valve lifters cannot be serviced.
Irregular valve noise when starting engine is
normal.
- Start engine and let run until coolant
temperature reaches at least 80 C (176 F).
- Increase RPM to 2500 for about 2 minutes; if
necessary test drive vehicle.
Note:
If irregular valve noises disappear but then
reappear during drive, replace oil retaining valve.
Oil retaining valve is located in oil filter bracket
Page 17
-6 .
If hydraulic valve lifters are still loud, locate faulty
Pa
ge 34 of 51 Valvetrain, servicin
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11/18/2002 htt
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pair&id=AUDI.B5.GE02.15.3
