Twingo III Phase 1 Valve Clearance Check (2014-2019)

ID: 169317

Description: This guide explains how to measure the valve...

Steps:

1. Open the trunk.
2. Remove the trunk carpets.

3. Unscrew the 6 screws by hand or with a T50 socket.
4. Lift and set aside the engine hood.

5. Release the wire harness sleeve from the cylinder head.
6. Unplug the ignition coil connector.
7. Unscrew the ignition coil fastener screw.
8. Remove the ignition coils.
9. Unscrew the camshaft position sensor fastener screw.
10. Remove the camshaft position sensor.
11. The spark plugs do not need to be removed. They can help keep the cylinders water resistant during the rest of the procedure.

12. Undo the following screws.
13. Remove the cylinder head cover upper housing, taking care with the gasket.

14. Remove the following screws.
15. Remove the upstream and downstream oxygen sensors.
16. Remove the upper heat shields.
17. Remove the upper catalytic converter mounts.
18. The exhaust manifold/catalytic converter assembly does not need to be removed.

19. Undo the following snap fit.
20. Gently pull on the fuel line.
21. Take the necessary precautions: fuel will leak.
22. Remove the cylinder head cover fasteners, starting with the outer screws and finishing with the inner screws.
23. Use a suitable tool to remove the valve cover.
24. Gasket material is present on the following areas.

25. Use a feeler gauge to check the clearance between the tappet and the back of the cam. It may be necessary to turn the crankshaft by hand.
26. Intake: between 0.35 mm and 0.45 mm.
27. Exhaust: between 0.46 mm and 0.54 mm.
28. If the value is outside the tolerance, the tappet will need to be replaced. See wiki for the tappet correspondence table.
29. To remove a tappet, the camshaft must be removed. To remove the camshaft, the timing system must be removed. See guides.
30. Thickness of the new tappet to choose = (ideal clearance - clearance measured with the worn tappet) + thickness marked on the worn tappet.