IGNITION
Spark Plugs
The tips that actually make the spark inside each cylinder.
Identification & Position
- Part name
- Spark Plugs
- System
- Ignition
- Location
- Threaded into the cylinder heads, one per cylinder.
- What it does
- Jumps a spark across a gap to ignite the compressed air and fuel.
- What it connects to
- • Plug wires or coils
- • Cylinder head
- • Combustion chamber
- What is above it
- Verification Required
- What is below it
- Verification Required
- What is in front of it
- Verification Required
- What is behind it
- Verification Required
- Must be removed to access it
- • Anything above the plug — plumbing, brackets or coils
- • Plug wire or coil
- • Plug
Show me how to take this apart
Dependency path — the order things must come off
Reveals the order of everything that has to be disconnected or removed to reach this part.
Symptoms & Testing
- Common failure symptoms
- • Misfire
- • Rough idle
- • Loss of power
- • Poor economy
- • Hard starting
- How to test it
- 1. Remove and read the plug condition.
- 2. Compare gap and wear across the set.
- 3. Check for oil or coolant fouling.
Symptoms narrow the list of possibilities. They never confirm a diagnosis on their own — test before replacing anything.
Part Numbers
Enter the Ford part number for your exact configuration.
Enter the aftermarket cross-reference you intend to use.
Part numbers vary by engine, drive type and build date. Nothing is guessed here — enter yours from a verified source on the admin page so it stays with this component.
Difficulty & Time
Safety Warnings
- Only remove plugs from a cool engine — hot aluminium heads damage easily.
- Plug torque and gap are specification-critical. Verify both for your engine before installing.
Tools Needed
- Spark plug socketRemoving plugs without cracking them
- Extensions and swivelsReaching starter, intake and bellhousing bolts
- Ratchets (1/4, 3/8, 1/2 drive)Driving sockets in tight and open spaces
- Torque wrenchAny fastener with a specification — mandatory for engine work
- Spark plug gap gaugeChecking plug gap against a verified specification
Related Parts
Real photos online
Opens photos of "Spark Plugs" on other sites
- Google ImagesWidest mix of real owner and shop photos.
- Bing ImagesOften turns up different photos than Google.
- Owner forumsPhotos with the story of the repair attached.
- Parts catalogue photosClean studio shots of the part on its own.
- Video walkthroughsSee it in place while someone works on it.
These open other people's websites in a new tab. Photos there belong to whoever took them, so they are shown on their own site rather than copied into this app — and they may be a different year, engine or trim, so always compare against your own truck.