GENERAL SPECIFICATIONS
| Item | Specification |
|---|---|
| Base ignition timing | 10 degrees BTDC (not adjustable) |
| Firing order | 1-3-7-2-6-5-4-8 |
| Spark plug gap | 1.32-1.42 mm (0.052-0.056 in) |
| Spark plug type (gasoline only) | AGSF-32N |
| Spark plug type (flexible fuel) | AGSF-22FM1 |
GENERAL SPECIFICATIONS
TORQUE SPECIFICATIONS
| Description | Nm |
|---|---|
| Spark plugs | 15 |
| Coil-on-plug bolts | 10 |
TORQUE SPECIFICATIONS
This vehicle uses a coil-on-plug electronic ignition system. The coil-on-plug ignition system consists of the following components
- Powertrain control module (PCM)
- Crankshaft position (CKP) sensor
- Ignition coil-on-plug
- Spark plugs
The PCM and the CKP sensor are also part of the electronic engine controls system. Refer to ELECTRONIC ENGINE CONTROLS article.
Eight separate ignition coils
- are controlled by the PCM for the correct firing sequence.
- are mounted directly above each spark plug.
The spark plugs
- change the high voltage pulse into a spark which ignites the fuel and air mixture.
- originally equipped on the vehicle have a nickel alloy electrode for long life.
Refer to the Introduction - Gasoline Engines article.
Scheme 1
| Item | Part Number | Description |
|---|---|---|
| 1 | 14A464 | Ignition coil-on-plug electrical connectors |
| 2 | W706175 | Ignition coil-to-intake manifold bolt (8 required) |
| 3 | 12A366 | Ignition coil (8 required) |
| 4 | 12405 | Spark plug (8 required) |
- For additional information, refer to the procedures in this article.
REMOVAL AND INSTALLATION
- Disconnect the negative battery cable. For additional information, refer to «BATTERY, MOUNTING AND CABLES»(/lincoln/town-car/iii-2003-2011/remont/body-electrical/#battery-mounting-and-cables) article.
- Remove the air cleaner outlet pipe. For additional information, refer to «INTAKE AIR DISTRIBUTION AND FILTERING»(/lincoln/town-car/iii-2003-2011/remont/removal-installation/#intake-air-distribution-system-and-filtering-system) article.
- Disconnect the electrical connector from the ignition coil-on-plug.
- Remove the bolt from the ignition coil-on-plug. To install, tighten to 10 Nm (89 lb-in).
- Remove the ignition coil-on-plug.
- To install, reverse the removal procedure.
- Remove the ignition coil-on-plugs. For additional information, refer to «Ignition Coil-On-Plug»(/lincoln/town-car/iii-2003-2011/remont/ignition-system/#engine-ignition-system) in this article.
- Remove the spark plugs. To install, tighten to 15 Nm (11 lb-ft).
- Inspect the spark plugs. For additional information, refer to «ENGINE SYSTEM - GENERAL INFORMATION»(/lincoln/town-car/iii-2003-2011/remont/mechanical/#engine-system-general-information) article.
- To install, reverse the removal procedure. Adjust the spark plug gap as required.