October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Lack Of Power

Check the following components or conditions:

Stored trouble codes.
Ignition system and timing.
Initial set coupler jumper wire removed (non-turbo).
Inspect air intake system for leaks.
Air control valve operation.
Air filter condition.
Airflow meter operation.
Intake air temp. sensor in airflow meter.
Check auxiliary port valve (non-turbo).
Intake air temperature sensor.
Injector operating sound (non-turbo).
Check double throttle system operation.
Check pressure or boost sensor.
Main fuel line pulsations to indicate operation (turbo).
Throttle sensor operation.
Coolant thermosensor.
Fuel pressure and fuel leaks.
ECU operation.
Check feedback system.
Engine compression.
Check injection volume.
Check knock control (turbo).
Check turbo and wastegate valve.
Check turbo control system.
Check accelerator cable.