Diagnostic Routine No. 19 - Unusual Noises
DIAGNOSTIC ROUTINE NO. 19 - UNUSUAL NOISES
| System | Component | Reference |
|---|---|---|
| Squeal, Click or Chrip | Oil Level (Low), Valve Train, Drive Belts (Loose), Belt Driven Components | Visual & Mechanical Components |
| " | EEC Solenoids | Audible & QUICK TEST Procedures |
| " | Turbocharger | Fuel System Mechanical Components |
| Rumble, Grind | Belt Driven Components | Mechanical Engine Components |
| Rattle | Components (Loose) | Visual and Audible |
| Hiss | Vacuum Distribution (Leak), Induction System (Leak), Spark Plug (Loose) | Visual and Audible |
| " | Turbocharger | Fuel System Mechanical Components |
| " | Cooling System (Leak) | Visual, Audible and Group 27 |
| " | EVAP System (Leak) | Visual & QUICK TEST Procedures |
| Snap | Secondary Ignition | Visual, Audible and QUICK TEST Procedures |
| Rap, Roar | Exhaust System (Leak) | Visual, Audible and Group 26 |
| " | EGR System (Leak) | Visual, Audible & QUICK TEST Procedures |
| Whine | Turbocharger (Some Whine Is Normal) | Visual, Audible and Group 2 |
| Knock | Connecting Rod Bearings (Worn), Main Bearings (Worn), PistonPins (Loose), Piston toBore Clearance (Cold Engine) | Mechanical Engine Components |
| " | Detonation | Diagnostic Routine #4 |