Fuel system of gasoline engines Peugeot 207

The device of the fuel system of gasoline engines
Fuel system block diagram «Bosch MEV 17.4»: 1 - throttle valve block; 2 - intake air distributor; 3 - solenoid valve for absorber pumping; 4 - adsorber tank (activated carbon filter); 5 - pipeline for recirculation of...

Fuel filter
The fuel filter is mounted on the pump housing and the fuel level sensor and does not have a filter element. Filter replacement is carried out together with the pump, sensor unit. Attention. After any work, require the...

Fuel pump (low pressure)
A non-return valve built into the fuel pump, in the filling circuit, maintains residual pressure in the engine supply circuit, due to which fuel is supplied to the fuel rail. The low pressure fuel pump is powered by...

Pressure regulator
The fuel pressure in the fuel rail is controlled by a regulator. Pressure value 3.5 bar.

Fuel injectors
Nozzles allow you to dose the amount of fuel (manufacturer «Siemens VDO»). The functioning of the nozzles occurs with each electrical impulse. The injectors are controlled separately according to the injection sequence...

Fuel pressure measurement
Attention. When connecting and disconnecting the pressure gauge, use a rag to protect the engine from possible splashing of fuel. Remove the engine junction box (BSM). Relieve pressure in the supply system: remove the...

Cleaning the fittings on the high pressure rail
Clearing areas for repairs (in the zone «A»): pour in the degreaser «Sodimac» in a suitable container; soak the brush in a degreaser; clear the dots «A» and at the same time remove dirt particles with a vacuum cleaner....

Leakproofness check
Note. To check the tightness of the high pressure fuel rail and injectors, the intake manifold must be removed. It is not necessary to remove the main elements of the system to check the tightness of the high pressure...

Removal and installation of fuel injectors
Removing Disconnect the negative battery terminal. Connect the pressure measuring hose to the bleed valve (1) fuel supply circuit. Drain the fuel into a suitable container. Unclip the wiring harness (2). Disconnect...

Replacing the high pressure sensor (EP6DT engines)
Remove the high pressure fuel rail. Disconnect the connector and remove the high pressure sensor (1). Install the parts in reverse order.

Replacing the fuel pump / fuel level sensor assembly
Attention. With valve «Schrader» to check and control the pressure, relieve the pressure and empty the fuel circuit. Fold down the right rear seat cushion. Raise the carpet. Remove the cover (3). Disconnect the fuel...

High pressure fuel pump replacement (EP6DT engines)
Place the car on a lift. Disconnect the battery. Attention. With valve ««Schrader» to check and control pressure, relieve pressure and empty the fuel circuit. Install plugs in the air cooler and turbocharger outlet...

Replacing the vacuum pump
Disconnect the battery. Remove the following parts: cover (1); air resonator (2); air duct (3). Disconnect fitting (in the zone «A»). Release the electrical harness (in zones «b» And «With»). Turn away bolts (4) And (5)...

Removal and installation of the fuel tank (all engines)
Removing Relieve pressure in the fuel system (see chapter « Removal and installation of fuel injectors »). Raise the right rear seat cushion. Raise the carpet. Remove the plug. Disconnect and set aside the connector in...

Adsorber in the fuel vapor recirculation system
The gasoline vapor adsorber is connected to the fuel tank. The activated carbon filter installed in it traps gasoline vapors and prevents them from entering the atmosphere (toxicity control system). The adsorber is a...

Canister bleed solenoid valve
The canister purge solenoid valve, controlled by the engine ECU, recirculates the gasoline vapor that enters the canister. When the canister purge valve is energized, the electromagnetic coil draws in the magnetic core,...

Evaporative Emission Sensors
Atmospheric pressure sensor The atmospheric pressure sensor allows the engine ECU to determine the density of the air entering the fuel injection system. The atmospheric pressure sensor is built into the engine ECU, so...

Block diagram of the fuel vapor recirculation system
1 - fuel tank; 2 - adsorber; 3 - solenoid valve for adsorber bleeding; 4 - ECU of the injection system; 5 - throttle valve block.

Intake valve lift phase change mode
Changing the lift of the intake valves allows you to change the amount of air supplied, without affecting the throttle. This mode allows: reduce reaction time; reduce fuel consumption; reduce harmful emissions; ensure...

Valve opening motor
The valve lift motor changes the camshaft angle on command from the engine ECU, this allows you to change the intake valve lift from minimum to maximum in 300 ms. Connector pin assignment: pin 1 - power supply 12 V;...

Intake valve position sensor
The intake valve position sensor informs the engine ECU about the angular intermediate position of the intake camshaft. Based on this information, the ECU determines the amount of intake valve lift, compares it with...

Throttle valve
A dual sensor built into the throttle body allows the engine ECU to determine the exact throttle position. Since the variable valve lift system does not need a throttle valve to dose the amount of air supplied, the...

Adsorber replacement
Disconnect the battery. Throttle modes: C - throttle rest position (contact open) or emergency position in case of malfunction; D - throttle position with the ignition on or at idle; E - throttle position at full...

Replacing the canister bleed solenoid valve
Disconnect the battery. Remove the protective shield under the engine. Disconnect: gasoline vapor collection tube (on the intake manifold) in the zone «b»; gasoline vapor collection tube (on the canister bleed solenoid...

Removing the intake manifold and throttle valve (EP3, EP6 engines)
Place the car on a lift. Disconnect the battery. Attention. Install the plug on the intake manifold inlet. Loosen the bolts (1) And (3). Remove the protective shield under the engine. Remove air baffle (6) and resonator...

Removing the intake manifold and throttle valve (EP6DT engines)
Place the car on a lift. Disconnect the battery. Remove the following parts: protective battery cover; battery; battery bracket; engine protection. Attention. On vehicles with EP6DT engines, reinstall the plugs at the...

Removing the heat exchanger (vehicles with automatic transmission AL4)
Disconnect the battery. Remove the front left fender liner. Remove deflector (2) and resonator (3). Unclip the fuse box (1). Remove the battery tray cover. Remove the battery. Disconnect connector (in the zone «A»)....

Exhaust system (diesel engine)
Identification Tightening method Outlet pipe mounting method Note. Observe the precautions to be taken before starting work. The front pipe must be protected from any external mechanical influences and must not come...

Exhaust system device (gasoline engine)
Symbols in the figure located on the next page: «A» points for marking the cutting zones of the exhaust system. «b» marking area: under the rear muffler. «With» marking area: under the intermediate muffler. «d» marking...

Removal and installation of an exhaust pipe (petrol engine)
Note. This chapter describes the procedure for a gasoline engine, the operations for a diesel engine are the same. Attention. The exhaust system must never be suspended without support from a flexible pipe. The flexible...