ignition

Ignition Coils - All

for 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD

Difficulty

Moderate

Time

2.2 h

Tools

Steps

This procedure covers the replacement of all six spark plug ignition coils on the 2014 Ram 2500 with 6.7L Cummins diesel engine, including removal of engine covers and proper installation with torque specifications.

Warnings

⚠️Wait at least 30 minutes after engine shutdown to avoid contact with hot engine components

⚠Disconnect negative battery terminal before beginning work to prevent electrical shorts

ℹ️The 6.7L Cummins diesel does NOT use traditional ignition coils - this procedure is NOT applicable to diesel engines which use glow plugs instead

⚠️STOP: This job category is incorrect for a diesel engine. Diesel engines do not have ignition coils or spark plugs. Refer to glow plug replacement procedures instead

Tools required

10mm socketEssential

13mm socketEssential

Ratchet and extension setEssential

Torque wrench (5-40 Nm range)Essential

Needle-nose pliersEssential

Dielectric greaseEssential

Anti-seize compoundEssential

Compressed air

Spark plug socket (5/8" or 16mm)Essential

Spark plug gap toolEssential

Parts

Ignition coil (COP type) × 6 — Use OEM specification
Spark plugs × 6 — Use OEM specification

Preparation

Park vehicle on level ground and engage parking brake
Allow engine to cool completely for at least 30 minutes
Disconnect negative battery terminal and wait 2 minutes
Remove engine cover by releasing retaining clips or fasteners
Clean area around valve cover to prevent debris from entering engine

Procedure

1
PROCEDURE NOT APPLICABLE - DIESEL ENGINE
CRITICAL ERROR: The 2014 Ram 2500 with 6.7L Cummins diesel engine does NOT have ignition coils or spark plugs. Diesel engines use compression ignition and are equipped with glow plugs for cold starting assistance. This procedure cannot be completed as specified. If you need to service the glow plug system, please refer to the appropriate glow plug replacement procedure. Do not attempt to locate or install ignition coils on this diesel engine.
⚠️This job is fundamentally incompatible with diesel engines - no ignition coils exist on this vehicle
2
Verify Engine Type
Confirm that the vehicle in question is actually equipped with a gasoline engine if ignition coils are being replaced. The 6.7L Cummins is exclusively a diesel engine. If working on a Ram 2500 with a gasoline engine (5.7L HEMI or 6.4L HEMI), refer to the correct procedure for that specific engine code.
3
Alternative: Glow Plug Service Reference
For the 6.7L Cummins diesel engine, the equivalent cold-start components are glow plugs located in the cylinder head. If experiencing cold-start issues or glow plug system faults, request the glow plug replacement procedure instead. Glow plugs on the Cummins are accessed from the driver side of the engine after removing the valve cover.

Reassembly

This procedure does not apply to diesel engines
Consult glow plug service procedures for 6.7L Cummins diesel applications

Verification

Recognize that diesel engines do not require ignition coil verification
For diesel engines, verify glow plug operation through scan tool monitoring of glow plug relay and individual plug resistance