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Ford EcoSport Spark Plugs Replacement Guide
How to change the spark plugs in a 2013 to 2021 Ford EcoSport with the EcoBoost turbo 1.0L I3 engine.

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2020 EcoSport 1.0L I3
Three Ignition Coils
Close Up Ignition Coil
This automotive maintenance tutorial was specifically written to assist owners of the second generation 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021 Ford EcoSport compact SUV in checking or changing the spark plugs in the EcoBoost turbocharged 1.0 liter inline three cylinder engine. (The procedure should be the same or very similar for the 2.0L I4 and 1.5L I3 engines.)

Owners of other Ford or Lincoln vehicles such as the Fiesta, B-Max, Escape, Edge, Bronco Sport, Explorer, Expedition, Transit, Focus, Mondeo, S-Max, Puma, Kuga, Endura, Everest, Ka, Figo, Endeavour, Aviator, Corsair, Nautilus and Navigator may also find these DIY instructions to be helpful.

The OEM (original equipment manufacturer) spark plugs in this 2020 Ford EcoSport Titanium with the EcoBoost 1.0L I3 engine were part number Ford HYFS-093-YEC (also known as HYFS 093YEC or HYFS093YEC).

A few other compatible replacement spark plugs with their part numbers are as follows: NGK 93593 (SILZNAR8C7H), Motorcraft SP538A and Bosch 96338.

Please check your old spark plugs and verify the correct replacement part numbers before buying new ones.

The tools and other items needed to complete this procedure include an 8mm socket with a 1/4" drive ratchet or an 8mm wrench, a 14mm spark plug socket (or a 9/16" spark plug socket), a long extension bar, a 3/8" drive ratchet and a tube of dielectric grease.

The first two steps are to open the hood and then locate the three black plastic ignition coils.

(If your vehicle is equipped with a plastic engine cover, remove it and set it aside in a safe place.)

The service manual recommends that the engine should not be extremely hot or completely cold. The best time to complete this procedure is when the engine is just warm to the touch.


Slide Out White Lock Tab
Push In Release Tab
Loosen Counterclockwise
Gently slide the white plastic lock tab on the electrical connector away from the ignition coil.

Once the power plug has been "unlocked", push down the release tab and slide it straight off the ignition coil.

Each ignition coil is held in place by two silver metal bolts.

Loosen the bolts by turning them in the counterclockwise direction with an 8mm socket and a 1/4" drive ratchet.

Loosen Second Bolt
Two Bolts Removed
Gently Loosen Coil
Spin out the two bolts and set them aside in a safe place.

Gently rotate the top of the ignition coil back and forth a few times to make sure the rubber dust boot is not stuck or "frozen" to the top of the old spark plug.

Pull Out Ignition Coil
Old Spark Plug In Well
Spark Plug Socket
Lift the ignition coil out of the spark plug well.

Set the ignition coil aside in a safe place.

If you see a CEL (check engine light) or SES (service engine soon) warning indicator on your SUV's gauge cluster, use an OBDII scanner (also known as an "OBD2 scan tool") to check for an ignition coil related DTC (diagnostic trouble code) such as P0350, P0351, P0352, P0353 and P0354.

The OEM (original equipment manufacturer) ignition coil part number is Ford CM5Z-12029-C (also known as CM5Z12029C or DG553).

A few other compatible replacement ignition coils with their part numbers include the following: Delphi GN10635, Spectra Premium C-949 and ENA ENAIC117101.

Some of the most common symptoms of a failing or faulty ignition coil include misfiring, stalling, reduced fuel economy (lower MPG), backfiring, rough idling, loss of power and difficulty starting the engine.

Attach the 14mm spark plug socket to the extension bar and a 3/8" drive ratchet.

(If necessary, you could also use a 9/16" spark plug socket since 9/16" is equal to 14.2875mm.)

I like to secure the spark plug socket to the extension bar with some electrical tape to help prevent it from popping off in the bottom of the well.

Loosen Counterclockwise
Spin Out Old Spark Plug
Lift Out Extension Bar
Lower the socket over the top of the old spark plug.

Carefully loosen the old spark plug by turning it in the counterclockwise direction.

If you have trouble loosening the spark plug, try spraying a small amount of penetrating oil down into the spark plug well.

Allow the penetrating oil to seep into the threads for at least 10 to 15 minutes before attempting to loosen the old spark plug again. Make sure you are turning the ratchet in the correct counterclockwise direction ("lefty loosey").

Once the spark plug is loose, detach the ratchet from the extension bar.

Spin out the old spark plug the rest of the way with the extension bar.

Lift the old spark plug out of the well. Your socket should have a rubber insert or a strong magnet to hold the old spark plug securely in place.

Inspect Old Spark Plug
Spin In New Spark Plug
Tighten Clockwise

Detach the old spark plug from the socket.

Inspect the condition of the old spark plug.

If the electrode tip of the old spark plug appears to be oily or covered in dark black soot, the engine might be burning oil and should be inspected by a professional mechanic.

If the electrode tip of the old plug appears to be white or ashy, the engine may have experienced over heating.

If you have a spark plug gap gauge tool, check the gap on the new spark plugs.

According to the owner's manual the spark plug gap specification is 0.026" to 0.030" (inches) or (0.65 to 0.75 mm) for the OEM Motorcraft SP-538A spark plugs.

Most spark plug manufacturers recommend that you do NOT apply anti-seize lubricant grease to the threads of the new spark plug. Anti-seize grease is a lubricant and can easily lead to over tightening.

Push the new spark plug into the socket. Your socket should have a rubber insert or a strong magnet to hold the spark plug in place.

Carefully lower the new spark plug down into the well. Try to avoid hitting the electrode tip against the side walls of the spark plug well or the cylinder head.

Spin in the new spark plug by hand in the clockwise direction to help prevent it from becoming cross threaded.

Attach the 3/8" drive ratchet and continue tightening the new spark in the clockwise direction until it is snug.

If you have a very reliable and sensitive torque wrench, the shop manual specification for tightening the spark plugs in the EcoBoost 1.0L I3 engine is a range of 10.3 to 12.5 lb-ft (pound - feet) or 14 to 17 Nm  (Newton - meters).

Try to avoid over tightening the spark plugs. They should be snug but not extremely tight.

Apply Dielectric Grease
Lower In Ignition Coil
Spin In First Bolt
Apply a small amount of dielectric grease to the opening in the rubber dust boot at the bottom of the ignition coil.

The dielectric grease will help ensure a reliable electrical connection by keeping out dust, debris and moisture.

Lower the ignition coil down into the spark plug well.

Push down the ignition coil to secure the rubber dust boot over the top of the new spark plug.

Rotate the coil back and forth a few times to help spread the dielectric grease.

Spin In Second Bolt
Tighten Clockwise
Second Bolt - Snug
Spin in the two bolts a few turns by hand in the clockwise direction to help prevent them from becoming cross threaded.

Continue tightening the bolts in the clockwise direction with the 8mm socket and a 1/4" drive ratchet until they are snug.

Avoid over tightening the bolts to prevent from cracking the plastic ignition coil housing.

Replace Power Plug
Slide In White Lock Tab
Spark Plugs Replaced
Slide the electrical connector straight on to the ignition coil.

You should feel or hear the power plug "click" securely into place.

Slide the white plastic locking tab in towards the ignition coil to secure the electrical connector.

Double check that all of the electrical connectors and bolts are tight before moving on to the next steps.

To test the new spark plugs, start the engine and listen closely for any strange sounds. If do you hear any weird noises, immediately turn off the ignition and check your work again.

Be sure to write down the spark plug change in your vehicle's service records.

The service interval specification in the owner's manual for changing the spark plugs is every 25,000 miles (or every 40,000 km). Please double check the maintenance schedule in your owner's manual for the correct service interval.

For more, check out all of the 2013-2021 Ford EcoSport DIY Repair & Maintenance Guides.

If you found this guide to be helpful, please consider making a small donation by clicking on the "Donate" button located to the right of this paragraph. Thank you!
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