Compression Pressure, Checking
WARNING: This page is about a different car, the 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools And Workshop Equipment Required
- Spark Plug Removal Tool :3122B
- Puller - Spark Plug Connector :T10112A
- Torque Wrench 1331 5-50Nm :VAG1331
- Compression Tester Kit :VAG1763
Test Conditions
- Engine oil temperature must be at least 30 °C (86 °F).
- Voltage supply OK.
- All electrical consumers such as, for example, headlamps and rear window defogger, must be off.
- If vehicle is equipped with an A/C system, it must be switched off.
- For vehicles with an automatic transmission, the selector lever must be in "P" or "N".
Perform the Following Work
-- Disconnect the connector -arrow- from the ignition coil.
-- Disconnect the connectors from the outer fuel injectors.
-- Remove the spark plug wires using the :T10112A .
-- Remove the spark plugs with :3122B .
-- Check the compression pressure using the :VAG1763 and :VAG1763/6 .
NOTE:
For information on using the tester. Refer to the Operating Instructions.
-- Have a second technician operate the starter.
-- Operate the starter until tester shows no further pressure increase.
Compression Pressure
| MKB | New Positive Pressure | Wear Limit Positive Pressure | Difference between Cylinders Bar Positive Pressure |
|---|---|---|---|
| CBPA | 10.0 to 13.0 bar (160 to 188.54 psi) | 7.7 bar (111.67 psi) | maximum 3.0 bar (43.5 psi) |
| CKJA | 14.0 to 17.0 bar (203 to 246.56 psi) | 9.8 bar (142.13 psi) | maximum 3.0 bar (43.5 psi) |
-- Check the engine control module DTC memory and correct any faults. Then erase the DTC memory. Refer to Installing .