Genuine 2011 Ford Focus Cylinder Head

2011 Ford Focus Cylinder Head Parts Questions & Experts Answers

• Q: How to remove and install a cylinder head with attached intake and exhaust manifolds in 2.3L and 2.0L engine on 2011 Ford Focus?

  A: The following text begins under the assumption that the cylinder head will be pulled with the intake and exhaust manifolds still installed-easier than removing them and reinstalling them separately but complicating the removal and installation process by making the assembly massive and awkward and thereby necessitating the use of an engine hoist to avoid damaging delicate components and causing injury. It can be done that way if necessary; one more detail to note is that if the manifolds are to be taken off first, the procedure must be adjusted appropriately. Only turn the engine anti-clockwise in its normal direction of rotation that is if you are standing at the right-hand side of the vehicle. Starting with, parking the vehicle over a firm level ground and then turning the hood open as well as removing the negative cable of the battery. Tag any disconnected vacuum lines, coolant and emissions hoses, wiring loom connectors, ground straps and fuel lines so they may be reconnected correctly. Pull the intake manifold gasket, exhaust manifold, heat shields, drift the cooling system, camshaft cover, timing chain or/and sprockets. Depress the pressure in the fuel system with the fuel pump fuse and turn on the engine until it stop and then turn on the engine for about five seconds. Remove the fuel feed pipe from the fuel injector rail and plug or cap all the outlets. Remove the coolant hoses which are connected with the housing in the left end of the cylinder head, unfixed and take off the upper fixing bolt of the alternator and disconnect the ground wire from the cylinder head near the alternator. Remove the camshafts and tappets, then gradually work round loosening and removing the ten cylinder head bolts, noting that new ones should be procured for refitting as they are high-stressed. Finally, carefully raise the cylinder head with the aid of an assistant, if possible, remove and dispose the gasket taking care to look at the positions of the dowels and any directional markings that might be there. If resistance is felt, do not try to pry between the head and block as it may cause damages; use a large prybar to rock the head and cause the gasket to break. When fitting the head it is important that the top surfaces of the head and block manufactured are free from the gasket and carbon by using hard type of scraper such as those made of hard plastic or wood to make the surfaces clean without allowing the carbon to penetrate the water jacket and oil ways. Cover the water, oil and bolt holes in the cylinder block with adhesive tape and paper & clean the pistons likewise. With respect to the surface of the couple, it is to assess the presence of nicks and scratches as well as damage, and if warpage is thought, use the straight-edge to determine distortion. Delete any items that have come in contact with mating surfaces, and make sure both locating dowels and all cylinder head bolt holes are equally free of oil, then just at the timing chain end of the engine dab a little bit of RTV sealant. Place a new gasket over the dowels on the cylinder block surface, to make sure it is correctly aligned. Turn the crankshaft counter clockwise until No 1 cylinder piston is at about 20 mm before Top Dead Centre inorder to avoid contacts between the valves and the piston during assembly. Remove the cylinder head and slot new bolts, which are hand tightened to just fit, and then using a torque wrench and then the extension bar and angle gauge tighten, in stages. These cylinder head bolts, once tightened correctly, cannot be check-tightened or retorqued. Replace the tappets, camshaft and timing chain and reassemble in reverse of the disassembling process, tighten all nuts and bolts to factory specified torque tighten the nuts and bolts, refill the cooling system and add engine oil where necessary, check all connection disturbed that is whether they are leaking oil or coolant after starting the engine and bringing it to normal conditions.