Spark Plug: Installation
WARNING: This page is about a different car, the 2017 RAM ProMaster 3500, 2017 RAM ProMaster 2500, and 2017 RAM ProMaster 1500. However, it is still accessible from the selected car via links, so may be relevant.
- Check and adjust the spark plug gap with a gap gauging tool (1). Refer to TECHNICAL SPECIFICATIONS .CAUTION:
Special care should be taken when installing spark plugs into the cylinder head spark plug wells. Be sure the plugs do not drop into the plug wells as electrodes can be damaged.
CAUTION:The spark plug tubes (1) are a thin wall design. Avoid damaging the spark plug tubes. Damage to the spark plug tube can result in oil leaks.
- Start the spark plug into the cylinder head by hand to avoid cross threading.CAUTION:
Spark plug torque is critical and must not exceed the specified value. Overtightening stretches the spark plug shell reducing its heat transfer capability resulting in possible catastrophic engine failure.
- Tighten the spark plugs to 17.5 N.m (13 ft. lbs.).NOTE:
The LH ignition coils are shown, the RH ignition coils are similar.
- Install the ignition coil (2). Refer to COIL, IGNITION, INSTALLATION .