This procedure covers removal and replacement of the cylinder head gasket on the 2012-2017 Toyota Camry 2.5L I4 engine, including timing chain removal, cylinder head service, and reassembly with torque-to-yield head bolts.

Warnings

Tools required

Parts

• Cylinder head gasket × 1 — Use OEM Toyota gasket
• Cylinder head bolts (set of 10) × 1 — Use OEM Toyota TTY bolts
• Valve cover gasket × 1 — Use OEM specification
• Exhaust manifold gasket × 1 — Use OEM specification
• Intake manifold gasket × 1 — Use OEM specification
• Timing chain cover gasket × 1 — Use OEM specification
• Timing chain tensioner gasket × 1 — Use OEM specification
• Water outlet gasket × 1 — Use OEM specification
• Engine oil and filter × 1 — Use OEM specification
• Various O-rings and seals × 1 — Recommend full gasket set

Fluids

• Toyota Genuine 0W-20 Engine Oil — 5 qt
• Toyota Super Long Life Coolant (Pink) — 10 qt

Preparation

1. Ensure engine is completely cold (preferably overnight)
2. Disconnect negative battery cable and isolate from terminal
3. Remove engine cover and air intake assembly
4. Drain engine coolant completely into appropriate container
5. Drain engine oil and remove oil filter
6. Remove front right wheel and fender liner for crankshaft access
7. Support engine with hoist or support fixture from above
8. Remove right side engine mount to allow engine tilting if needed
9. Label and photograph all electrical connectors and vacuum lines before disconnection
10. Have replacement gaskets and NEW cylinder head bolts on hand before disassembly

Procedure

1. 1

   Remove valve cover and upper engine components
   Disconnect ignition coils and remove them from valve cover. Remove PCV hoses and ventilation tubes. Remove valve cover bolts in reverse of tightening sequence (outside to inside). Carefully lift valve cover off - it may be sealed with RTV in addition to gasket. Inspect valve train for unusual wear or damage.
2. 2

   Remove exhaust manifold
   Disconnect oxygen sensors and set aside. Remove exhaust manifold heat shield. Remove exhaust manifold nuts in a crisscross pattern working from outside toward center. Separate exhaust manifold from cylinder head and catalytic converter. Inspect manifold for cracks and warpage.
   ⚠Exhaust studs are prone to breaking on high-mileage engines - apply penetrating oil 24 hours before removal if possible
   Torque spec

   Exhaust Manifold Nuts25 Nm (18 lb-ft)
3. 3

   Remove intake manifold
   Disconnect throttle body connector and all injector connectors. Remove fuel rail (release fuel pressure first by removing fuel pump relay and cranking engine). Disconnect all vacuum lines, PCV connections, and coolant hoses from intake manifold. Remove intake manifold bolts and lift manifold assembly away from cylinder head. Cap all open ports.
   ⚠️Relieve fuel system pressure before disconnecting fuel lines - residual pressure can spray fuel
   Torque spec

   Intake Manifold Bolts25 Nm (18 lb-ft)
4. 4

   Set engine to TDC and remove timing chain cover
   Rotate crankshaft clockwise using 19mm socket on crankshaft bolt until timing marks align at TDC on cylinder #1 (check that both camshaft timing marks align with head surface). Mark chain-to-sprocket relationship with paint pen. Remove crankshaft pulley bolt (may require breaker bar - very tight). Remove timing chain cover bolts and carefully separate cover from block. Remove oil pump drive chain and crankshaft timing sprocket if needed for access.
   ℹ️Take clear photos of timing mark alignment before proceeding - these are critical for reassembly
5. 5

   Remove timing chain and camshaft sprockets
   Hold timing chain tensioner compressed and insert 3mm pin to lock it in retracted position. Remove timing chain tensioner assembly. Remove camshaft sprocket bolts while holding camshafts with camshaft holding tool. Remove both camshaft sprockets. Carefully lift timing chain off crankshaft sprocket and remove from engine. Verify all timing marks are still aligned and documented.
   ⚠Do NOT rotate crankshaft or camshafts from this point forward until chain is reinstalled
6. 6

   Remove camshafts
   Loosen camshaft bearing cap bolts in reverse sequence (from ends toward center) in multiple passes to gradually release valve spring tension. Remove all bearing cap bolts and caps - keep caps in order as they are not interchangeable. Carefully lift intake and exhaust camshafts straight up from cylinder head. Inspect cam lobes and journals for scoring or excessive wear. Store camshafts on clean surface where they cannot roll.
   ⚠Camshaft bearing caps are directional and position-specific - mark or organize them carefully for reinstallation in exact original positions
7. 7

   Remove cylinder head bolts and head
   Disconnect remaining coolant hoses from cylinder head. Remove cylinder head bolts in reverse of tightening sequence (working from outside toward center) in 2-3 passes. Loosen each bolt gradually to prevent warping. Once all bolts are removed, carefully break head seal using plastic pry points (never pry on gasket surfaces). Lift cylinder head straight up and place on clean padded work surface. Do NOT lay head on gasket surface.
   ⚠Cylinder head weighs approximately 40 lbs - use assistance or hoist to prevent dropping and injury
   Torque spec

   Cylinder Head Bolts - Step 140 Nm (30 lb-ft)
8. 8

   Inspect and clean mating surfaces
   Remove all old gasket material from cylinder head and block surfaces using only plastic or brass scrapers - never use metal tools on aluminum. Clean surfaces with brake cleaner and lint-free cloths. Use straightedge and feeler gauge to check cylinder head flatness - measure along centerline and diagonally. Maximum warpage is 0.05mm (0.002 inch). If warpage exceeds specification, head must be resurfaced by machine shop. Inspect block surface similarly. Check cylinder bores for scoring or ridge wear. Verify all bolt holes are clean and dry.
   ⚠Any scratches or gouges in head or block mating surfaces will cause gasket failure - work carefully and patiently
   ℹ️If head requires resurfacing, total material removed over engine life must not exceed 0.2mm maximum
9. 9

   Install new head gasket and position cylinder head
   Verify block surface is completely clean and dry. Install new cylinder head gasket over block with 'UP' or 'TOP' marking facing cylinder head. Align gasket locating dowels. Do NOT use any sealant on head gasket. Carefully lower cylinder head onto block, aligning dowel pins. Ensure head seats fully and evenly on gasket. Install NEW cylinder head bolts finger-tight in sequence (center outward pattern).
   ⚠️Only use NEW torque-to-yield head bolts - old bolts have been permanently stretched and will not provide proper clamping force
10. 10

    Torque cylinder head bolts
    Following proper sequence (center outward), torque all head bolts to 36 Nm (27 lb-ft) in at least 2 passes. Then, using torque angle gauge, tighten each bolt an additional 90 degrees in sequence. Finally, tighten each bolt another 90 degrees in sequence (total 180 degrees beyond initial torque). Mark bolts with paint pen after each 90-degree turn to track progress. Verify all bolts have been turned equally.
    ⚠Torque angle method is critical - an accurate angle gauge is required, do not estimate angles
    Torque spec

    Cylinder Head Bolts - Step 140 Nm (30 lb-ft)
11. 11

    Install camshafts and bearing caps
    Lubricate camshaft journals and lobes with clean engine oil. Position both camshafts in cylinder head with timing marks positioned for TDC #1. Install bearing caps in original positions with directional arrows pointing toward timing chain end. Install cap bolts finger-tight. Torque camshaft cap bolts to 16 Nm (12 lb-ft) in proper sequence (center outward) in multiple passes. Verify camshafts rotate smoothly by hand.
12. 12

    Install timing chain and set timing
    Verify crankshaft is still at TDC. Install timing chain over crankshaft sprocket, then route up and install on camshaft sprockets with all timing marks properly aligned per service manual specifications. Install camshaft sprocket bolts and torque while holding camshafts. Install timing chain tensioner with pin still inserted. Double-check all timing marks alignment before removing tensioner pin. Remove pin to allow tensioner to apply tension. Rotate crankshaft 2 complete revolutions clockwise and verify timing marks realign perfectly at TDC.
    ⚠️Incorrect timing will cause immediate catastrophic engine damage - verify timing marks multiple times before proceeding
13. 13

    Install timing cover and front accessories
    Clean timing cover and block mating surfaces thoroughly. Install new timing cover gasket or apply proper RTV sealant per manufacturer specification. Install timing cover and torque bolts in sequence. Install crankshaft pulley and torque pulley bolt to specification (very high torque - typically 133 lb-ft plus angle). Install accessory drive belts.
    ℹ️Some timing covers use formed-in-place gasket (FIPG) sealant instead of gasket - follow exact Toyota procedure for your model year
14. 14

    Install intake and exhaust manifolds
    Install new intake manifold gasket and position intake manifold on cylinder head. Install bolts and torque to 24 Nm (18 lb-ft) in crisscross pattern from center outward. Reconnect all vacuum lines, coolant hoses, and fuel system components. Install new exhaust manifold gasket and position exhaust manifold. Install nuts and torque to 34 Nm (25 lb-ft) in crisscross pattern. Reconnect oxygen sensors.
    Torque spec

    Intake Manifold Bolts25 Nm (18 lb-ft)

    Exhaust Manifold Nuts25 Nm (18 lb-ft)
15. 15

    Install valve cover and finish assembly
    Install new valve cover gasket in valve cover groove. Apply small dab of RTV sealant at camshaft cap corners if specified by Toyota. Position valve cover on head and install bolts finger-tight. Torque valve cover bolts to 14 Nm (10 lb-ft) in crisscross pattern from center outward. Reconnect all ignition coils, PCV system, and ventilation hoses. Reinstall engine mount and lower engine onto mount. Reinstall all remaining components in reverse of removal.

Reassembly

1. Reinstall fender liner and wheel, torque lug nuts to specification
2. Reconnect battery negative cable
3. Fill engine with 5.0 quarts Toyota Genuine 0W-20 engine oil and new filter
4. Fill cooling system with Toyota Super Long Life Pink coolant - may require bleeding procedure to remove air pockets
5. Double-check all electrical connectors, hoses, and fasteners are properly reconnected
6. Verify no tools or materials remain in engine bay

Verification

• Before starting engine, remove spark plugs and manually rotate crankshaft 2 full revolutions to verify no valve-to-piston interference
• Reinstall spark plugs and start engine - monitor closely for first 30 seconds for unusual noises or leaks
• Check for oil leaks at valve cover, timing cover, and head gasket areas
• Check for coolant leaks at all hose connections and head gasket
• Verify engine reaches normal operating temperature and cooling fans cycle properly
• Allow engine to idle for 10-15 minutes, then recheck coolant level and top off as needed after burping system
• Road test vehicle under light load, then recheck all fluid levels and inspect for leaks
• Monitor engine for several days for any signs of coolant or oil consumption that might indicate gasket issues

More procedures for this vehicle