Gasoline & Diesel Engine Trouble Shooting
- Condition & Possible Cause
- Notes
- Engine Lopes While Idling
- Engine Has Low Power
- Faulty High Speed Operation
- Faulty Acceleration
- Intake Backfire
- Exhaust Backfire
- Engine Detonation
- External Oil Leakage
- Excessive Oil Consumption
- No Oil Pressure
- Low Oil Pressure
- High Oil Pressure
- Noisy Main Bearings
- Noisy Connecting Rods
- Noisy Pistons and Rings
- Noisy Valve Train Components
- Noisy Valves
- Burned, Sticking or Broken Valves
- Broken Pistons and/or Rings
- Excessive Exhaust Noise
- Diesel Engine Trouble Shooting
- Notes
- Engine Does Not Crank
- Engine Cranks Slowly but Does Not Start
- Engine Cranks Normally but Does Not Start
- Engine Starts but Will Not Run at Idle
- Engine Starts and Idles Rough Without Abnormal Smoke or Noise
- Engine Starts and Idles Rough Without Abnormal Smoke or Noise, but Clears After Warm-Up
- Engine Misfires Above Idle but Idles Correctly
- Engine Will Not Return to Idle
- Fuel Leaking on Ground
- Knocking Noise from Cylinders
- Noticeable Loss of Engine Power
- Excessive Black Smoke and Loud Engine Noise
- Engine Overheating
- Oil Light On at Idle
- Engine Will Not Shut Off
- Vacuum Pump Diagnosis