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 BASIC TESTING and TESTS W/CODES articles below were performed before diagnosing a symptom.

Symptoms available for diagnosis include the following:

• Engine Will Not Start
• Engine Hard To Start
• Erratic Idle
• Poor Pick-Up (Acceleration)
• Misfire
• High Fuel Consumption
• Engine Hesitation
• Poor Power Output
• Poor Hot Starting
• Diagnosis Not Possible