Routine No. 9 - Idles Rough
ROUTINE NO. 9 - IDLES ROUGH
| System | Component | Reference |
|---|---|---|
| Vacuum Distribution | Vacuum Leak(s) | Visual and Audible |
| Induction | Air Duct & Hoses, (Poor Connection or Restricted), Filter Element (Clogged), VaneAFM | Visual & Fuel System Components |
| Throttle Body | Throttle Plates & Linkage, Gasket (Leaks), Idle Adjustment, By-Pass Air Control Valve | Visual & Fuel System Components |
| Ignition | Scope Engine For: Spark Plugs, Coil, Secondary Wires, Distributor Cap and Rotor | Ignition System Mechanical Components |
| Fuel Delivery | Lines (Pinched), Filter, Pump, Sender Filter, Fuel (Con- taminated), Injectors | Fuel System Mechanical Components |
| EGR | Components | QUICK TEST Procedures |
| PCV | Valve | QUICK TEST Procedures |
| EVAP | Components | QUICK TEST Procedures |
| EEC | Quick Test | QUICK TEST Procedures |
| Ignition Timing | Base plus Advance and Retard Functions | Ignition Mechanical Components |
| Turbocharger | Bearings, Compressor, Turbine | Fuel System Mechanical Components |
| Exhaust | Pipes, Muffler, Catalytic Converter | Exhaust System Components |
| Basic Engine | Compression, Valve Train, Camshaft, Intake Manifold Gasket | Mechanical Engine Components |