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Engine Ignition System - 4.0L SOHC: Specifications Ford Mustang V

Ignition System 2 illustrations ~190 words

GENERAL SPECIFICATIONS

ItemSpecification
Base ignition timing
Firing order1-4-2-5-3-6
Spark plug gap1.32-1.42 mm (0.052-0.056 in)
Spark plug typeAGSF24N
Silicone Brake Caliper Grease and Dielectric Compound XG-3-AESE-M1C171-A

GENERAL SPECIFICATIONS

TORQUE SPECIFICATIONS

DescriptionNm
Spark plugs17
Ignition coil bolts6
Ignition coil bracket-to-cylinder head bolt (M8)23
Ignition coil bracket-to-cylinder head bolts (M12)80
Ignition coil bracket-to-intake manifold bolts8

TORQUE SPECIFICATIONS

The ignition system consists of the

  1. crankshaft position (CKP) sensor.
  2. ignition coil.
  3. spark plug wire.
  4. spark plug.

The ignition system is

  1. an electronic distributorless ignition system (EDIS) controlled by an electronic engine control integrated into the powertrain control module (PCM).
  2. set at 10 degrees before top dead center (BTDC) for base timing, and is not adjustable.

The crankshaft position (CKP) sensor

  1. is a variable reluctance sensor.
  2. senses a missing tooth on the crankshaft damper pulse ring.
  3. generates a crankshaft position signal which is sent to the PCM. The PCM counts this signal for engine rpm.

The ignition coil

  1. changes low voltage pulses from the PCM to high voltage pulses.
  2. has 3 transformers.
  3. fires 2 spark plugs simultaneously.

Spark plug wires carry high voltage pulses from the ignition coil to the spark plugs.

The spark plugs

  1. change high voltage pulses to spark at the gap, which ignites the fuel and air mixture.

The firing order is: 1-4-2-5-3-6.

Scheme 1

Scheme 1

Refer to the INTRODUCTION - GASOLINE article.

Scheme 2

Scheme 2: Engine Ignition Components - Exploded View
  1. For additional information, refer to the appropriate procedure.