Timing chain replacement: Toyota Yaris 2011 (1NR-FE)

🧭 Before you start

Remove the intake, EGR, fuel rail, ignition and sensor parts, the valve cover and the crankshaft pulley, then the engine support bracket and timing chain cover. Remove the tensioner, guides and chain, and discard the crankshaft oil seal. Fit the new chain with the painted links on the gearwheel marks, refit the guides and the pinned tensioner, then check the chain on its guide rail. Apply sealant, align the oil pump, refit the cover following the tightening sequence, and rebuild with new gaskets and O-rings.

Fits: platform codes 1.33, 16V

• Timing position: the crankshaft or camshaft is set and locked during this job
• Special tools named: locking pin
• Renewed: timing chain

Don't miss

• Always renew the timing chain on this engine.
• The painted links must align with the camshaft gearwheel marks; check again before the cover goes on.
• Push the tensioner plunger fully in and lock it with a pin before fitting.
• Discard the crankshaft oil seal, renew gaskets and O-rings, and apply sealant to the cover.
• Align the oil pump with the crankshaft before fitting the chain cover, and follow the bolt sequence.

Written for this job from the workshop steps below · TorqFix editorial.

🔧 Engine codes this applies to

📋 Procedure

Preparation and removal

1. Always renew the timing chain
2. If the timing chain is to be re-used, mark the running direction before removal
3. Never turn the engine in the direction opposite to that of normal operation
4. Always use new gaskets
5. Remove the exhaust manifold lower heat shield

6. Remove the fuel rail together with the injectors
7. Remove the EGR pipe
8. Remove the wiring loom
9. Remove the inlet manifold
10. Remove the EGR valve
11. Remove the ignition coils
12. Remove the crankcase breather hose
13. Remove the coolant bypass pipe
14. Remove the ancillary drive belt tensioner pulley
15. Remove the camshaft position sensor(s)
16. Remove the valve cover
17. Remove the water inlet
18. Remove the crankshaft position sensor
19. Remove the crankshaft pulley centre bolt
20. Use the special tool to counterhold
21. Remove the crankshaft pulley
22. Remove the right-hand engine support bracket
23. Remove the timing chain cover
24. The paint on the camshaft gearwheel and chain must be aligned
25. Remove and discard the crankshaft oil seal
26. Turn the crankshaft to 20° ATDC
27. Chain tensioner:
28. Push the plunger in until it stops
29. Turn the engine 20° anti-clockwise
30. Chain tensioner:
31. Lock the chain tensioner with a locking pin
32. The paint on the camshaft gearwheel and chain must be aligned
33. Check the position of the timing chain on the guide rail
34. Remove the upper timing chain guide
35. Remove the chain tensioner guide
36. Remove the timing chain
37. Use the special tools
38. Bolt:
39. Bolt:
40. Water pipe:
41. Crankshaft pulley
42. Valve cover
43. Ignition coil
44. Camshaft position sensor
45. Inlet manifold
46. Fuel rail
47. Exhaust manifold

Installation and checks

48. Renew the gaskets
49. Renew the O-rings
50. Refit the timing chain upper guide rail
51. Refit the plug
52. Note: Apply sealant before fitting
53. Align the oil pump
54. Refit the timing chain cover
55. Refit the right-hand engine support bracket
56. Tighten the bolts by hand
57. Tightening sequence:
58. Tighten the timing cover bolt(s)

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