Power supply system for 1.6 and 1.8 l engines Mazda 626 (5)

General description of the power supply system
The fuel system consists of a fuel tank, electric fuel pump, fuel pump relay, injectors, pressure regulator, air filter and throttle body. All models covered in this...

Technical specifications
Fuel pressure Maximum fuel pump pressure: – models with a 1.6 liter engine 4.4 – 5.9 bar – models with a 1.8 liter engine 5.0 – 6.4 bar Ignition on, engine not running:...

Releasing pressure from the fuel system
Caution! Observe safety precautions when working with gasoline. 1. Remove the fuel tank filler cap. 2. Disconnect the fuel pump connection connector (indicated by the...

Fuel pump/fuel system pressure
Identifying the Electronic Fuel Injection Main Relay Terminals (1990-1994 Models) Identifying the Circuit Open Relay/Fuel Pump Terminals Identifying the fuel pump relay...

Fuel pipes and connections
Correct connection of the hose to the tube 1. Hose 2. Clamp 3. Tube Inspection Periodically inspect tubes and hoses for cracks or deformation. Check that tubes and hoses...

Removal and installation the fuel pump
1. Release the pressure from the fuel system. 2. Remove the rear seat and unscrew the mounting screws (indicated by arrows) and remove the casing. 3. Disconnect the pump...

Fuel level sensor
Resistance with the float lever lowered (the fuel tank is empty) The resistance with the float lever lowered should be approximately 110 ohms. Resistance with the float...

Fuel tank — removal and installation
Fuel tank connections and fastening diagram 1. Fuel pump; 2. Fuel tank; 3. Filler neck; 4. Check valve; 5. Check valve and shut-off valve; 6. Separator; 7. Fuel vapor...

Air filter — removal and installation
Air filter diagram 1. Air filter; 2. Air flow sensor; 3. Air intake pipe; 4. Resonator; 5. Fresh air supply hose Removal and installation 1. Squeeze the air flow sensor...

Accelerator cable — removal and installation
Removal 1. Loosen the lock nuts on the accelerator cable. 2. Turn the throttle lever and disconnect the cable. 3. Route the cable into the engine compartment and remove...

Electronic fuel injection system
Electronic fuel injection system diagram for 1990–1994 models 1. Air filter housing; 2. Resonator pipe; 3. Air flow sensor (with temperature sensor); 4. Vacuum chamber...

Checking and replacing injection system components
Throttle body Examination 1. Check the operation of the throttle valve connecting mechanism. Check that the throttle valve opens fully. 2. Inspect the throttle body for...

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Capella 5 (1991-1997)