How to Change Spark Plugs Ford Focus
How to Change Spark Plugs Ford Focus: 2014 Ford Focus, 2.0 liter engine. Ford OEM spark plugs are Motorcraft, part number is CYFS12YP. New spark plugs used here are also Motorcraft SP522 Platinum spark plugs, cost is about $20 each.
Ford Focus 2.0L engine is used on a variety of models and production years, spark plug change procedure is the same on all 2.0 liter engines of this type.
Spark plugs are part of preventive maintenance and should be replaced at manufacturer recommended intervals and/or depending on spark plug type. More details on Spark Plugs Intervals.
Tools: 8mm socket & ratchet,16mm spark plug socket and extension, grease or anti seize compound.
Spark Plug Removal Ford Focus
Unplug ignition coil electrical connectors (image below). Press ignition coil plug release tab and unplug it.
If coil electrical connector plug is seized on ignition coil body, carefully use a flat screwdriver as a lever to remove it. Unplug all four ignition coil plugs.
Ignition coils are held in place with 8mm bolts. Remove 8 mm coil bolts and lift ignition coils out of engine head.
Use 16mm spark plug socket and ratchet to remove old spark plugs.
Spark plug replacement should be done on a cold engine, easier to remove old spark plugs when engine is cold.
Spark Plug Installation
Apply anti-seize compound or grease on spark plug threads. Use only extension and spark plug socket to install new spark plugs initially, Do Not use a ratchet. Place a spark plug on spark plug socket and thread spark plug on engine head opening as much as you can by hand only. Repeat same procedure on other spark plugs.
After spark plugs are installed by hand, use ratchet to tighten them. Do not over tighten, spark plugs have a crush washer and usually takes less than one full turn to fully tighten them with a ratchet after hand tightening.
Install ignition coils. Line up ignition coil bolt hole with engine hole and press coils in. Install 8mm ignition coil bolts and tighten them. Plug ignition coil electrical connectors.
Start your car and leave it running for a minute or so, to check engine operation.
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