Lack of Power, Sluggish

DEFINITION:
Engine delivers less than expected power. Little or no increase in speed when accelerator pedal is partially depressed.

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 operator under heavily loaded condition?

Check air filter element for contamination. Replace as necessary.

CHECK:
- Throttle linkage for interference and proper travel.
- Ignition timing. See Emission Control Information Label.
- Restricted air filter.
- For restricted fuel filter or improper fuel pressure.
- ECM Grounds.
- EGR operation for being open or partly open all the time.
- Generator output voltage. Repair if less than 9 or more than 16 volts.
- Engine valve timing and compression.
- Engine for proper or worn camshaft.
- Secondary ignition for correct sparking voltage and duration using a scope.
- Secondary air control system.
- Poor or contaminated gasoline (check for excessive alcohol content), suggest owner try different brand.
- Check exhaust system for restriction.