2021 Jeep Grand Cherokee TrackhawkFACTORY OEM SERVICE PROCEDURE

Spark Plug: Installation: 6.2L

CAUTION:

Handle the spark plugs with care. Do not drop or force the spark plugs into the wells, damage to the electrodes or porcelain body may occur. Always start each spark plug by hand in order to avoid cross-threading the spark plug in the cylinder head.

Always tighten spark plugs to the specified torque. Too much or not enough torque will cause damage to the cylinder head or spark plug and may lead to poor engine performance.

GC0182881Courtesy of CHRYSLER GROUP, LLC
  1. To avoid cross threading, start the spark plug(s) (1) into the cylinder head by hand.
  2. Tighten the spark plugs to the proper specifications. Refer to TORQUE SPECIFICATIONSΒ  .
    GC0192179Courtesy of CHRYSLER GROUP, LLC
  3. Install the ignition coil(s). Refer to COIL, IGNITION, INSTALLATIONΒ .
  4. Install the engine cover.
  5. Connect negative battery cable.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.