Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
11 00 039 Checking compression of all cylinders (N20, N26)
Special tools required :
Interrupt power supply to ignition coils.
Necessary preliminary tasks :
- Remove SPARK PLUGS
Unscrew tip (1) from special tool 11 0 222 .
Prepare special tool 11 0 222 in conjunction with 11 8 732 and 11 8 731 .
Order number: 0 490 615/0 496 107.
Prepare special tool 11 0 222 in conjunction with 11 8 732 and 11 8 731 .
Screw special tool 11 0 222 into special tool 11 8 731 to 10 Nm.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.