LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2006 >> Wrangler X, Automatic >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition Control >> Coil Rail - 4.0L >> Installation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Coil Rail - 4.0L: Installation

  1. Connect engine harness connector to coil by snapping into position. Move slide tab towards engine for a positive lock. See Figure.
  2. Position ignition coil rubber boots to all spark plugs. Push down on coil assembly until bolt bases have contacted cylinder head
  3. Install 4 coil mounting bolts. Loosely tighten 4 bolts just enough to allow bolt bases to contact cylinder head. Do a final tightening of each bolt in steps down to 29 N.m (250 in. lbs.) torque. Do not apply full torque to any bolt first.
  4. Connect negative battery cable to battery.