Lack of Power

Engine delivers less than expected power. Little or no increase in speed on slight acceleration.

POSSIBLE CAUSE ACTION


Incorrect spark advance Check spark controls.
SEE Ignition System/ TIMING SPECIFICATIONS

Lean Air-Fuel mixture Check fuel pressure.
Check O2 sensor.
Perform injector balance test (MPI).

EGR malfunction Check EGR system.
Testing and Inspection

Restricted exhaust Check Catalytic Converter system.
See Plugged or Restricted Exhaust Testing.

Poor or contaminated fuel Recommend higher grade fuel