If your timing is right on, how will the timing marks on the two pulleys line up with each other?
Dot to Dot for the 2000 Ford Ranger 4.0L engine.
The 4.0L engine ignition system consists of the:
- crankshaft position (CKP) sensor
- ignition coil
- spark plug wire
- spark plug
The ignition system:
- is an electronic ignition (EI) system controlled by an electronic engine control integrated into the powertrain control module (PCM).
- base timing is set at 10 degrees before top dead center (BTDC) and is not adjustable.
The crankshaft position sensor:
- is a variable reluctance sensor.
- senses a missing tooth on crankshaft damper pulse ring.
- generates a crankshaft position signal which is sent to the PCM. The PCM counts the signal for engine rpm.
- For additional information on the CKP sensor, refer to Section 303-14.
The ignition coil:
- changes low voltage pulses from the powertrain control module to high voltage pulses.
- has three transformers.
The spark plug wires carry high voltage pulses from the ignition coil to the spark plugs.
The spark plugs:
- change high voltage pulses into spark at the gap, which ignites the fuel and air mixture.
- have a platnium-enhanced active electrode for long life. The active electrode is different for LH and RH sides.
- have replacements (with both electrodes platnium-enhanced) so they can be used on either side.