Spark Plug: Installation: 3.7L

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Setting Spark Plug Gap

Courtesy of CHRYSLER LLC

Check and adjust the spark plug gap with a gap gauging tool (1). See Specifications
Start the spark plug into the cylinder head by hand to avoid cross threading.
Tighten the spark plugs to 27 N.m (20 ft. lbs.).

Fig 2: Locating Ignition Coils
Courtesy of CHRYSLER LLC
Before installing the ignition coil (1), check the condition of the coil O-ring and replace as necessary. Apply silicone based grease such as Mopar® Dielectric Grease into the spark plug end of the rubber boot, coil O-rings and to the top of spark plugs.
Install the ignition coil (1). See Installation
Install all the necessary air filter tubing and air intake components at the top of the engine and at the throttle body.