spark plugs AUDI A3 1995 8L / 1.G AEB ATW Engines Cylinder Head Remove And Install Workshop Manual
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Compression, checking
Special tools and equipment
VAG1381 or VAG1763 compression tester
3122B spark plug removal tool
Test condition
Minimum engine oil temperature: 30 C (86
F)
Test procedure
- Remove engine covers.
- Switch ignition off and remove harness
connectors to ignition coils.
- Unbolt ignition coils (arrows).
- Remove all harness connectors to fuel injectors.
- Using 3122B spark plug removal tool, remove all spark plugs.
- Open throttle to Wide Open Throttle (WOT) position.
- Using VAG1381 or VAG1763 compression tester, test engine
compression.
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Page 34 of 35
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- Activate starter until no further pressure
increases are indicated by VAG1381 or
VAG1763 compression tester.
Compression pressure
Engine code
New
Wear limit
AEB 10.0-13.0 bar
(145-188.5 psi) 7.0 bar
(101.5 psi)
Permissible difference between all cylinders: 3
bar (43 psi)
- Install spark plugs and ignition coils.
- Check DTC memory.
Repair Manual, 1.8 Liter 5V Turbo Fuel
Injection & Ignition, Repair Group 01
Note:
Diagnostic Trouble Codes (DTCs) are stored
when harness connectors are disconnected.
After testing, check DTC memory and erase.
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Page 35 of 35
Tightening torques
Component
Tightening
torques
Spark plugs into cylinder
head 30 Nm (22 ft lb)
Ignition coils to cylinder head
cover 10 Nm (7 ft lb)
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