fuel AUDI A4 2000 B5 / 1.G AFC Engine Lock Carrier Removing For Service Workshop Manual

- Disconnect all harness connectors on fuel injectors.
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15-14

- Disconnect positive crankcase ventilation
connections on left and right cylinder head
covers.

- Disconnect fuel supply and return lines.

- Unclip cover on intake air housing.

- Remove both screws under cover.

- Push back and lift intake air housing upward.

- Pull vacuum hose off left side and remove
housing.

- Remove left-side cover for fuel injector lines.

- Detach accelerator pedal cable and lay clear.

- Disconnect line from Idle Air Control (IAC) valve
at throttle body.

- Disconnect harness connector at IAC valve and
throttle position sensor.

- Disconnect vacuum pipe at the cruise control vacuum control actuator.
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15-18

Compression pressure, checking


Engine warm-oil temperature at least 30 C
(86 F)

Throttle valve fully open during cranking

- Disconnect harness connectors from ignition coil
power output stage and from all six fuel
injectors.

- Use compression pressure recorder VAG 1381
together with adapter 1381/5 or equivalent to
measure compression.

Note:
Refer to operating instructions for use of the
recorder.

- Operate starter until tester shows no additional
increase in pressure.

Compression pressures
New: 9-14 bar (131-203 psi)
Wear limit: 7.5 bar (109 psi)
Pa
ge 16 of 35 Lock carrier, removin
g for service
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE01.15.4