Air is escaping from a very small pipe which seems to be disconnected or broke from its housing which is located at the right hand side to the rear of the engine what is this pipe for and what is the housing it is connected to?

You'll need Hydraulic Floor Jack, Jack Stands, Wrench Set, Socket Set with extensions, Screwdrivers, Pliers, HAmemr, Pry bar, Fluid Drain Pan, Light, Rags, Containers to organize nuts and bolts, and possibly an assistant to help you out.
Then follow these steps:
1. Disconnect the negative battery cable
2. remove the black plastic air intake to create some room
3. Remove the transmission fluid dipstick and if possible the dipstick tube
4. Remove all brackets, hoses or cables that connect the engine and transmission
5. Locate starter motor and remove easily accessible starter bolts
6. Remove any of the top bell housing to accessible engine bolts
7. Chock rear wheel to raise the front of the vehicle
8. Drain all transmission fluid
9. Put the oil pan back in its position but only tighten the nuts by hand
10. Remove the driveshaft by removing the 4 U-joint bolts that hold the driveshaft to the rear differential
11. Disconnect all electrical connectors and hoses
12. Detach the oil cooler liens of the transmission
13. Remove the starter bolts
14. Remove the torque converter for the flywheel bolts
15. Remove all the bolts and nuts that are holding back the transmission mount
16. Remove the cross member
17. Remove the exhaust crossover pipe
18. Remove the transmission bell housing bolts
19. Now remove transmission from the engine and bring it down to the floor by removing the remaining bell housing bolts.
20. Lastly, remove the torque converter from the transmission
To know more in detail, please refer to this video: https://www.youtube.com/watch?v=t7PVog9gD2o

On 4 cylinder engines: The oil pressure sending unit is located in the rear of the block near the oil filter housing
On 6 cylinder engines: Sending unit is located near the oil filter housing behind the air conditioning compressor, on the front side of the block

Water pump is driven by timing chain idler and is mounted on the rear of the timing chain housing. Disconnect the neg. battery cable. Drain cooling system. Disconnect oxygen sensor connector.
Remove upper exhaust manifould heat sheild. Remove exhaust manifold brace. Remove lower exhaust manifold heat sheild. Loosen manifold to exhaust manifold spring loaded nuts. Remove radiator outlet pipe to water pump coverbolts. Disconnect exhaust pipe from manifold.
Pull down on the exhaust pipe to disconnect it from exhaust manifold bolts. Disconnect outlet pipe from oil pan and transaxle. If equipped with manual tranaxle, remove exhaust maifold brace. Leave lower radiator hose attached and pull down on radiator out look pipe to disengauge from water pump. Leave outlet pipe hanging.
Lower vehicle. Remove exhaustmanifold to cylinder head nuts. Remove exhaust manifold to cylinder head nuts. Remove manifould. Remove timing chain front cover. Remove timing chain tensioner. Remove bolts bolts securing water pump cover to cylinder block. Remove water pump to timing chain housing nuts. Remove water pump attaching nuts. Remove water pump and cover assembly. Separate componets as necessary.
WHEN INSTALLING WATER PUMP MAKE SURE YOU FOLLOW THE TIGHTENING SEQUENCES THAT AFFECT SEALING. My frist one I messed up and broke the pump so becarful.
Installation
If cover was separated from body during removal, join this componets with a new gasket and hand tighten bolts. Apply bearing grease to splines of water pump drive. Set body and assemble into position.
Install and hand tighten bolts securing cover to cylinder block. Install and hand tighten bolts securing cover to cylinder block. Installand hand tighten nuts securing body to timing chain housing. Lubracate outlet pipe "O" ring with antifreeze. (I use RTV) Connect outlet pipe. Install and hand tighten bolts. Tighten bolts and nuts to specification in the following sequence. I'll ad the torque spec. at the end but this is where if you tighten out of order something will break.
pump assembly to timing chain housing nuts.
pump cover to pump body bolts
pump cover to cylinder block bolts (Bottom Bolt First)
outlet pipe to cover bolts
To complete installation reverse removel procedure.
Torque specs are 19 in. or 26mm all except water pump cover bolts which are 124 in or 14Nm
I never torque the bolts just make sure there done in the right order.

Right-Hand
Removal

1. Remove spark plug heat shield (12A406).
   

1. Remove distributor to spark plug wires (12286) using Spark Plug Wire Remover T74P-6666-A.
   
1. Disconnect muffler inlet pipe.
   
1. If equipped with secondary air injection, disconnect the secondary air injection check valve tube (9B480).
   
1. Remove attaching bolts and right exhaust manifold (9430).
   
1. Inspect joint faces for signs fo exhaust leaks, cracks or any defect that would make exhaust manifold unfit for use
   

Left-Hand Removal






1. Remove oil level indicator tube (6754).

1. Remove spark plug heat shield.
   

1. Remove distributor to spark plug wires using Spark Plug Wire Remover T74P-6666-A.
   

1. Disconnect EGR valve to exhaust manifold tube (9D477). If equipped with air injection, disconnect the secondary air injection check valve tube.
   

1. Disconnect muffler inlet pipe.
   

1. Remove attaching bolts and exhaust manifold (9431).
   

1. Inspect joint faces for signs of exhaust leaks, cracks or any defect that would make the exhaust manifold unfit for use.
   

Installation

1. Clean mating surfaces of right exhaust manifold or left exhaust manifold and cylinder head (6049). Clean mounting flange of right exhaust manifold or left exhaust manifold and inlet pipe(s). Clean mounting surface for air injection tube or right exhaust manifold. Apply light film of Premium Long-Life Grease XG-1-C or -K or equivalent meeting Ford specification ESA-M1C75-B to right exhaust manifold or left exhaust manifold.
   

1. Position right exhaust manifold or left exhaust manifold on cylinder head. Install attaching bolts and washers, starting at fourth bolt hole from front of each right exhaust manifold or left exhaust manifold. Tighten bolts to 34-47 Nm (25-35 lb-ft), working from center right to both ends.
   
1. Position inlet pipes to right exhaust manifold or left exhaust manifold. Install attaching nuts and tighten to 34-47 Nm (25-35 lb-ft).
   
1. Position the secondary air injection check valve tube and the secondary air injection tube gasket (9C435) at rear of right-hand exhaust manifold. Install attaching bolts and tighten to 19-25 Nm (14-18 lb-ft).
   
1. Attach the secondary air injection manifold tube (9B449) to left-hand exhaust manifold fitting (located under EGR tube). Tighten nut to 30-40 Nm (22-30 lb-ft).
   
1. Attach the secondary air injection check valve tube to rear of right-hand cylinder head. Tighten bolts to 75-85 Nm (56-62 lb-ft).
   
1. Connect EGR valve to exhaust manifold tube to left exhaust manifold, if removed. Tighten nut to 53-72 Nm (39-53 lb-ft).
   
1. Install spark plug heat shield and distributor to spark plug wires.
   
1. Install oil level indicator tube to left exhaust manifold, if removed. Tighten nut to 13-24 Nm (10-18 lb-ft).
   
2. Start engine (6007) and check for exhaust leaks.
   

Hope this helps you...WF †

Front Bumper (434230)

Removal
1. Remove the radiator grille.
2. Remove the left-hand front wheel.
3. Detach the fender splash shield from the bumper cover and fender (both sides).
4. Remove the air cleaner intake pipe retaining clip.
5. Detach the air cleaner intake pipe from the air cleaner housing.

1 Rotate the pipe clockwise.

2 Detach the pipe.
6. Detach the bumper cover from the fender and support bracket (both sides).
7. Remove the left-hand side bumper retaining nut.
8. Remove the right-hand side bumper retaining nut.
9. Remove the bumper.

Installation
1. To install, reverse the removal procedure.

The PCV valve is a small plastic right-angle pipe located in the rear (firewall side) valve cover, on the passenger side end of the cover.
It can be removed by hand.

The fuel filter is located underneath the air filter box, it is a black metal cylinder, mounted vertically, about 6 inches tall and 3 inches wide with pipes mounted to the top and bottom. The lower is a 14mm flare nut, the top is a 17mm banjo bolt.

It's located in the intake manifold under the throttle body, Follow the radiator hose from the drivers side to the engine. The hose is then connected to the thermostat housing which goes under the throttle body and behind the exhaust pipe. 
if you have small hands and the right tools you can get it out with out disconnecting the exhaust pipe or throttle body. 
Good luck and i feel the pain. Keep me posted.

Hi FTjoe , the air filter on this vehicle is located under the upper engine covers on the left hand side of the engine. to gain access to this item you will need to remove, the microfilter housing ( held in by 4 x t27 torques screws, upper engine cover (held down with 5 x 6mm hex bolts and the small engine cover a the back of the engine 2 x 6mm hex bolts. remove the air intake trunking that sits on the front slam panel and goes to the air filter housing by meens of a flexi square pipe, once this is removed you will need to remove the air filter cover 5 x 6mm hex bolts, then you should be able to replace the filter, once fitted all removed parts are reinstalled in reverse order, hope this is of some help, regards mark.

Drain coolant at the radiator drain. Remove air intake hose and MAF sensor assembly. remove throttle cable bracket and disconnect cable linkage. Remove throttle body bolts and disconnect coolant hoses to throttle body. Loosen heater hose pipe and remove heater hose from rear of pipe. Remove radiator hose from thermostat housing. Remove top thermostat housing bolt. Loosen and almost remove lower thermostat bolt. You will need to slide your wrench and hand under the exhaust crossover pipe to gain access. Loosen the bolt until you can remove the thermostat housing, it should be slotted to clear the bolt. Replace the thermostat and reassemble. Bleed cooling system using the two bleed screws (one on thermostat housing and the other on the passenger side of the engine where the heater hose pipe comes out above the water pump.