Replacing the cylinder head gasket (Skoda Fabia 6Y)

Cylinder head of the 1.9L, 74 kW engine

1 – cylinder head cover; 2 – crankcase ventilation valve; 3 – crankcase ventilation hose; 4 – oil filler cap; 5 – sealing ring; 6 – cover mounting bolt; 7 – cover gasket; 8 – bracket mounting bolt; 9 – bracket; 10 – connecting block of injector harness; 11 – brake shoe mounting bolt; 12 – brake booster vacuum hose; 13 – vacuum pump; 14 – pump mounting bolt; 15 – fuel supply hose; 16 – fuel drain hose; 17 – gasket; 18 – bracket bolt; 19 – Ball head bolt; 20 – bracket; 21 – eye; 22 – hose holder; 23 – cylinder head gasket; 24 – eye mounting bolt; 25 – cylinder head; 26 – glow plug; 27 – pump nozzle; 28 – cylinder head mounting bolt

Diesel engine cylinder head gasket markings

1 – part number; 2 – code; 3 – characteristics (thickness) of the gasket

Heater hoses

1 – heater pipe; 2 – heater fluid drain hose; 3 – heater fluid supply hose; 4 – tee; 5 – vacuum pump; 6 – vacuum pump hose

Turbocharger (bottom view)

1 – rear air duct hose; 2 – lower air duct hose; 3 – turbocharger mounting bolt; 4 – turbocharger bracket; 5 – bracket mounting bolt; 6 – turbocharger oil drain hose; 7 – vacuum hose of the boost pressure regulator

Replacing the gasket is shown on a diesel engine; on other engines, replacement is carried out in a similar manner.

Please note: For diesel engines, spare parts are supplied in three standard sizes of gaskets, each with a different thickness. When replacing, you need to install a new gasket with the same markings as the old one.

Important! Every time the cylinder head is removed, the cylinder head mounting bolts must be replaced with new ones on all engines except the 1.0L, 37 kW and 1.4L, 50 kW engines.

Important! For 1.0L, 37 kW and 1.4L, 50 kW engines, lubricate the threads with a thin layer of engine oil before tightening the cylinder head bolts.

1. Disconnect the wire from the "-" terminal of the battery.

2. Drain the engine cooling system (see subsection 5.13).

3. Remove the upper engine cover (see subsection 2.1).

4. Remove the air filter together with the air duct (see subsection 4.1).

5. Remove the battery and its bracket (see subsection 10.2).

6. Loosen the mounting bolts and remove the rear air duct (from the air filter to the turbocharger).

7. Disconnect the glow plug wire connector from the wiring harness.

8. Disconnect the exhaust pipe from the exhaust manifold (see subsection 6.2 and subsection 6.3).

9. Disconnect hoses 1 and 2 from the turbocharger, having first unscrewed the bolt securing the lower air duct to the bracket (see the figure Turbocharger (bottom view)).

10. Unscrew the union nut and disconnect the drain hose 6 from the cylinder block.

11. Unscrew bolt 3, loosen bolt 5 and turn bracket 4 downwards.

12. Disconnect vacuum hose 7 from the boost pressure regulator.

13. Loosen the mounting bolts and, without disconnecting the hoses from it, remove the throttle body from the engine intake pipe. Set the throttle body aside.

14. Unscrew bolts 6 (see figure Cylinder head of the 1.9 l, 74 kW engine) fasteners and remove cylinder head cover 1 and gasket 7.

15. Disconnect hose 16 from the fuel filter and plug it to prevent fuel from leaking out.

16. Disconnect the fuel supply hoses 1 and drain hoses 4 from the fuel pipes and the coolant supply hose 5 (2 – injector harness connector block; 3 – fuel temperature sensor).

17. Disconnect the wiring harness from fuel temperature sensor 3.

18. Disconnect the connector with wires from connector 10 (see figure Cylinder head of the 1.9 l, 74 kW engine) injector harness.

19. Disconnect and remove the oil supply pipe to the turbocharger.

19. Disconnect and remove the oil supply pipe to…

20. Disconnect hoses 1, 2 and 3 of the engine cooling system (4 – coolant temperature sensor).

21. Disconnect the wiring harness from coolant temperature sensor 4.

22. Disconnect hose 3 from tee 4 (see the picture Heater hoses).

23. Disconnect hose 6 from pump 5.

24. Remove the camshaft drive belt (see subsection 2.4.1). Turn the crankshaft back slightly from the TDC position.

25. Remove the camshaft pulley and pulley hub (see subsection 2.8).

26. Remove the water pump (see subsection 5.5 and subsection 5.6).

27. Remove the camshaft position sensor (see subsection 4.24).

28. Remove the rear camshaft drive belt cover.

29. Screw a bolt into the hole in the powertrain support mount so that the engine can be lifted.

30. Loosen the cylinder head mounting bolts 2–3 turns in the sequence shown in the figure, and then remove them.

31. Remove the cylinder head. If the head cannot be torn off the block, it can be knocked off with light blows of a rubber hammer.

32. Remove the cylinder head gasket.

33. Thoroughly clean the mating surfaces of the block and head from any remaining old gasket, dirt and oil.

34. Remove oil from the threaded holes in the cylinder block under the head mounting bolts.

35. Turn the crankshaft so that all pistons are in the middle of the cylinders.

36. Place the new gasket onto the guide pins 1 with the part number on the gasket facing up. If the pins have fallen out, you need to insert new ones (2 – cylinder block).

37. Install the cylinder head and tighten the bolts by hand.

38. Tighten the head bolts in the sequence shown in the figure below, in four stages: