Symptom Diagnosis
Symptom checks cannot be used properly unless the problem occurs while the vehicle is being tested. To reduce diagnostic time, ensure steps in appropriate BASIC TESTING and TESTS W/CODES articles in the ENGINE PERFORMANCE Section were performed before diagnosing a symptom. These symptoms are available for diagnosis.
- No Start - Cold Engine
- No Start - Warm Engine
- Starts But Stalls
- Hard To Start - Cold Engine
- Erratic Idle - Warm-Up
- Backfiring
- Incorrect Idle Speed
- Hesitation - Acceleration
- Hesitation - Coasting
- Knocking
- Engine Misfire - All Conditions
- Insufficient Engine Power
- Poor Fuel Economy
- Excessive HC & NOx