Freeze Plugs - All

Complete replacement of all engine block freeze plugs on the 5.0L Coyote V8, requiring engine removal from the vehicle to access all plug locations.

Warnings

Tools required

Parts

• Engine freeze plug kit (all sizes) × 1 — Use OEM specification
• Engine oil filter × 1 — FL-910S or equivalent
• Oil pan gasket × 1 — Use OEM specification
• Exhaust manifold gaskets (both sides) × 2 — Use OEM specification
• Exhaust flange gaskets × 2 — Use OEM specification
• Engine mount bolts × 4 — Replace as needed
• High-temperature RTV sealant × 1 — Motorcraft TA-30 or equivalent
• Anaerobic sealant for freeze plugs × 1 — Permatex 51813 or equivalent

Fluids

• Motorcraft 0W-20 Full Synthetic — 7.5 qt
• Motorcraft Orange Coolant — 16 qt
• Motorcraft MERCON LV ATF — 1 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Disconnect negative battery cable and secure away from terminal
3. Allow engine and cooling system to cool completely (minimum 4 hours)
4. Drain engine coolant completely into appropriate container
5. Drain engine oil and remove oil filter
6. Drain automatic transmission fluid (approximately 1 quart will drain from torque converter)
7. Remove engine cover and air intake assembly
8. Remove radiator, cooling fans, and upper/lower radiator hoses
9. Relieve fuel system pressure by removing fuel pump fuse and cranking engine briefly
10. Label and photograph all electrical connections, vacuum lines, and hose routing
11. Raise vehicle and support securely on jack stands
12. Remove front skid plate if equipped

Procedure

1. 1

   Disconnect engine accessories and wiring
   Disconnect all engine wiring harnesses including main PCM connector, coil pack connectors, injector harness, alternator, and all sensors. Disconnect throttle body, fuel lines (use quick-disconnect tool), EVAP lines, brake booster vacuum line, and any remaining vacuum lines. Remove serpentine belt and alternator. Disconnect ground straps from engine block to frame.
2. 2

   Remove exhaust system components
   Support exhaust system with jack or stands. Remove exhaust manifold-to-catalytic converter flange bolts on both sides. Remove exhaust hangers as needed to lower exhaust away from engine. If clearance is tight, remove complete exhaust manifolds from engine (8 bolts per side). Keep hardware organized by location.
   ⚠Exhaust studs may break during removal. Have replacement studs available if removing manifolds.
3. 3

   Disconnect transmission from engine
   Support transmission with transmission jack. Remove transmission bellhousing-to-engine block bolts (typically 6-8 bolts depending on transmission type). Remove torque converter-to-flexplate bolts (4 bolts, access through starter opening or rotate engine). Do not let transmission hang unsupported. Mark flywheel/flexplate orientation to torque converter for reassembly.
   Torque spec

   Mounting Bolts60 Nm (44 lb-ft)
4. 4

   Remove engine mounts and prepare for extraction
   Attach engine hoist with chains or straps to engine lift points (front and rear of cylinder heads). Apply slight tension to hoist to support engine weight. Remove left and right engine mount through-bolts. Remove engine mount bracket-to-engine bolts if necessary for clearance. Verify all connections, hoses, and wiring are disconnected.
   ⚠️Double-check that ALL connections are disconnected before lifting. A caught hose or wire can cause engine to shift dangerously during extraction.
   Torque spec

   Mounting Bolts60 Nm (44 lb-ft)
5. 5

   Extract engine from vehicle
   Slowly lift engine while monitoring clearances on all sides. Use load leveler to adjust engine angle as needed - typically nose-up slightly for RWD F-150. Guide engine forward and up, separating from transmission. Once clear of transmission, continue lifting and move engine forward out of engine bay. Lower onto engine stand and secure with minimum 4 bolts into bellhousing mounting points.
   ⚠️Never position any body part under suspended engine. Have helper guide engine during extraction.
6. 6

   Remove oil pan for access
   With engine on stand, remove oil pan bolts (approximately 16 bolts). Carefully break oil pan seal using plastic gasket scraper - do not damage sealing surfaces. Remove oil pan and old gasket material. This provides access to rear freeze plugs on block. Clean oil pan and inspect for damage.
   Torque spec

   Gasket Surface Bolts26 Nm (19 lb-ft)
7. 7

   Identify all freeze plug locations
   The 5.0L Coyote has freeze plugs on both sides of block, rear of block (behind oil pan area), and in cylinder heads. Typical locations: 2-3 plugs per side of block between cylinders, 2 plugs at rear of block, and 1-2 per cylinder head at rear. Inspect each location and note size (typically 25mm to 38mm diameter). Clean area around each plug for assessment.
8. 8

   Remove old freeze plugs
   Using freeze plug removal tool or slide hammer with screw adapter, remove each freeze plug. Alternative method: drill small hole in center of plug, thread in self-tapping screw, and pull with slide hammer or pry with care. For stubborn plugs, collapse inward using punch and pry out. Clean each bore thoroughly with wire brush, removing all rust, old sealant, and debris. Inspect bore for corrosion or damage. Bore must be smooth and clean for proper new plug sealing.
   ⚠Be careful not to damage freeze plug bore when removing old plugs. Gouges or distortion will prevent proper seal of new plugs.
9. 9

   Prepare and install new freeze plugs
   Verify each new freeze plug size matches bore. Apply thin coat of anaerobic sealant around outer edge of each freeze plug as specified. Position freeze plug squarely in bore with convex (domed) side facing outward. Using appropriately-sized freeze plug installation tool and hammer, drive plug into bore until seated flush or slightly recessed (typically 1-2mm below block surface). Plug should be square and evenly seated around entire circumference. Repeat for all freeze plug locations.
   ⚠Driving plug in crooked will cause leaks. Ensure plug remains square during installation. If plug cocks sideways, remove and start over.
   Torque spec

   Freeze Plug10 Nm (7 lb-ft)
10. 10

    Reinstall oil pan
    Clean all gasket surfaces on engine block and oil pan using gasket scraper. Ensure surfaces are completely free of old gasket material and oil. Install new oil pan gasket according to manufacturer instructions (may use RTV, pre-formed gasket, or combination). Position oil pan and install bolts hand-tight in star pattern from center outward. Torque oil pan bolts to specification in multiple passes, working in star pattern to ensure even gasket compression.
    Torque spec

    Gasket Surface Bolts26 Nm (19 lb-ft)
11. 11

    Prepare engine for reinstallation
    Install new oil filter. Verify all freeze plugs are properly seated and sealant has set per manufacturer instructions (typically 1 hour for anaerobic sealant). Inspect all gasket surfaces, particularly exhaust manifolds and any covers removed. Clean engine exterior of any oil, coolant, or debris. Rotate engine on stand to proper orientation for installation.
12. 12

    Reinstall engine into vehicle
    Attach engine to hoist using same lift points. Raise engine to appropriate height and angle using load leveler. Carefully guide engine into engine bay, aligning with transmission bellhousing. Adjust angle as needed to clear frame rails and steering components. Once aligned with transmission, carefully lower engine while guiding transmission input shaft into clutch/torque converter. Align engine mounts with frame brackets.
    ⚠️Guide transmission input shaft carefully. Do not let engine hang on transmission shaft.
13. 13

    Secure engine mounts and transmission
    Install engine mount through-bolts and torque to specification. Install engine mount bracket bolts if removed. Install transmission bellhousing-to-engine bolts and torque to specification. Install torque converter-to-flexplate bolts (ensure alignment marks match) and torque to specification. Remove transmission jack and engine hoist once all mounting bolts are secured.
    Torque spec

    Mounting Bolts60 Nm (44 lb-ft)
14. 14

    Reconnect exhaust and accessories
    Install exhaust manifolds with new gaskets if removed, or reconnect exhaust flanges with new gaskets. Torque exhaust fasteners per specification. Reinstall alternator and serpentine belt. Reconnect all electrical connectors using labels and photos for reference. Reconnect fuel lines, vacuum lines, throttle body, and all hoses. Install air intake assembly. Reconnect ground straps.
15. 15

    Fill fluids and final connections
    Lower vehicle from jack stands. Fill engine with 7.5 quarts Motorcraft 0W-20 synthetic oil. Fill cooling system with Motorcraft Orange Coolant - use vacuum fill procedure if available to avoid air pockets, otherwise fill slowly and burp system. Reconnect battery negative cable. Install engine cover. Reinstall radiator, cooling fans, and all remaining components removed during disassembly.

Reassembly

1. Ensure all electrical connectors are fully seated and locked
2. Verify all hose clamps are tight and hoses are properly routed
3. Check that serpentine belt is properly seated on all pulleys
4. Confirm all ground straps are reinstalled and tight
5. Double-check transmission fluid level and top off as needed

Verification

• Before starting engine, verify oil level is correct on dipstick
• Turn ignition to ON position (without starting) and check for warning lights, fuel leaks, or electrical issues
• Start engine and immediately check for oil pressure on gauge
• Inspect all freeze plug locations for coolant leaks while engine warms up
• Monitor for oil leaks around oil pan gasket
• Allow engine to reach operating temperature and verify cooling fans operate
• Check for exhaust leaks at manifold connections
• After test drive, recheck all fluid levels and inspect for any leaks
• Verify transmission shifts properly through all gears
• Perform final inspection of engine bay for any loose connections or forgotten components

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