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COMPRESSION, CHECKING Audi TT 8J рестайлинг

2.0l - Cylinder Head, Valvetrain - Engine Code(s): Cdma (coupe) 1 illustration ~166 words

COMPRESSION, CHECKING

Special tools and workshop equipment required

  1. Spark Plug Removal Tool 3122 B
  2. Compression Tester V.A.G 1763

Procedure

  1. Engine oil temperature at least 30 °C (86 °F).
  2. Battery voltage at least 12.5 V.

Disconnect the injector valve connector -2-.

Scheme 431

Scheme 431
Scheme 431

Note. Ignore -1, 3, 4 and 5-.

Remove ignition coils. Refer to Removal and Installation .

Remove spark plugs with 3122 B.

Check compression pressure with the V.A.G 1763.

Have a second technician press the accelerator pedal down all the way while operating the starter until the pressure increase is no longer displayed on the tester.

Repeat procedure on each cylinder.

Compression PressureBar Pressure
New10.0 to 14.0
Wear limit7.0
Maximum difference between cylinders3.0

Assembling

Assemble in reverse order of disassembling. Note the following

Install spark plugs. Refer to SPARK PLUGS, REMOVING AND INSTALLING .

Install ignition coils. Refer to Removal and Installation .

Faults are saved in Engine Control Module (ECM) when electrical connectors are disconnected

Connect vehicle diagnosis, testing and information systemVAS 5051B.

Start "Guided Functions" operating mode.

Generate readiness code in ECM.