Lack of Power, Sluggish

DEFINITION
Engine delivers less than expected power. Little or no increase in speed when accelerator pedal is pushed down part way.

Compare customer's car to similar unit. Make sure the customer's car has an actual problem. Was the customer's old car much more powerful? Is vehicle operated under heavily loaded condition?

CHECK
- Proper ignition output voltage with spark tester J26972 or equivalent (ST-125).

- Secondary ignition for correct sparking voltage and duration using a scope.

- Ignition timing. See Emission Control Information label.

- Knock sensor for excessive spark retard.