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 the following articles in this section were performed before diagnosing a symptom:
Symptoms available for diagnosis include the following.
- Difficult To Start
- Surges Or Chuggles
- Lack Of Power Or Sluggish
- Detonation Or Spark Knock
- Hesitation Or Stumble
- Cuts Out Or Misses
- Poor Fuel Mileage
- Rough, Unstable Idle Or Stalls
- Excessive Exhaust Emissions Or Odors
- Runs-On Or Diesels
- Backfires