Ford F-150/F-250: How to Replace Your Coil

An ignition coil can affect your truck's performance in many ways. Here is how to change the coil on your Ford F-150 or Super Duty.

By Cynthia Griffith - November 18, 2014
Contributors: br549

This article applies to the Ford F-150 (2004-2014) and the F-250, F-350 Super Duty (2005-2014).

If you're having difficulty starting your F-150 or Super Duty, or if you find yourself sputtering along the open road, you might be dealing with a bad ignition coil. The ignition coil in your Ford F-150 or Super Duty is the induction coil that supplies the necessary spark to power your vehicle. To put it simply, it creates the spark that amps up the voltage in your pickup. Replacing an ignition coil is a simple task that can be performed at home if you choose to do so.

Materials Needed

  • Quarter inch drive
  • Universal joint
  • Long extension
  • Ratchet and metric sockets
  • Torque wrench
  • Dielectric grease

Step 1 - Remove the fuel rails

Please note that your engine should be turned off and your vehicle should be in park prior to any maintenance attempts. Removing the fuel rail will help you to reach the coil packs. Remove the fuel rails by simply unbolting the two bolts on the top, then gently pulling it up. Once you have located the ignition coil packs, proceed to step 2.

  • Figure 1. Ignition coil packs.
  • Figure 2. Fuel rails.

Step 2 - Remove the bolts and electrical connectors

Remove the bolts/connectors from the ignition coil in a numerical order.

Figure 3. Remove in this numerical order.

Step 3 - Twist the coil from the plug

Repeat this step for each coil.

Figure 4. Remove each coil from plug.

Step 4 - Replace the coil pack

It is best to replace the entire coil pack as opposed to just one coil in order to avoid malfunctions in the future. The coils should snap into place.

Figure 5. A new coil pack.

Step 5 - Tighten the coils

The coil bolts should be precisely tightened to 50 inch pounds. A torque wrench will do the job nicely. Connect the bolts and electrical connectors the reverse of removal.

Figure 6. Tighten the coil pack.

Step 6 - Return the fuel rails to original position

Using the palm of your hand, snap the fuel rail back into place and tighten the bolts around it.

Figure 7. Re-install fuel rails.

Pro Tip

If you are having trouble snapping the new coils onto the spark plugs, a dab of dielectric grease applied to the inside of the coil boots should do the trick.

Featured Video: How to Replace Coil Packs in F-150/F-250 Truck

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