2. Remove ignition coils with output stage -N70-, -N127-, -N291- using puller -T10094A-.
3. Disconnect all harness connectors from fuel injectors.
4. Remove the spark plugs.
5. Measure the compression pressure in the cylinders using special equipment.
Crank the engine over with the starter until the gauge no longer shows any increase in pressure.
Compression pressure values
6. If the required values are not reached, then the tightness of the combustion chamber should be checked.
7. Install the spark plugs and tighten them with a tightening torque of 30 Nm.
8. Install ignition coils N70-, -N127-, -N291-.
9. Connect the wiring harness connectors to the fuel injectors.
10. Install the engine cover with air filter.
11. Clear errors using special scanning equipment.
Note. Each time you disconnect the wiring harness connectors from the fuel injectors, errors are loaded into the fault memory.