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?

Remove air cleaner and check air filter for dirt, or for being plugged. 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.
- Engine Control Module (ECM) Grounds.
- EGR operation for being open or partly open all the time.
- Alternator 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.
- Poor or contaminated gasoline.
- Poor quality or contaminated gasoline. Check for excessive alcohol content, suggest owner try different brand.
- Check Exhaust system for restriction.