Fuel and exhaust systems — general description The fuel system includes: fuel tank; electric fuel pump (mounted inside the fuel tank); injection system main relay and fuel pump relay; nozzles; pressure regulator; air filter; throttle body. All vehicles covered in...
Fuel System Decompression Procedure 1. Before repairing any part of the fuel system, be sure to relieve fuel pressure to avoid fire and personal injury. 2. Unscrew the filler cap. This ensures the release of residual pressure in the tank. 3. Pressure can...
Fuel pump check Fuel pump wiring diagram 1. Pump relay; 2. Pump; 3. Processor unit; 4. STA signal; 5. NA signal 6. From the crankshaft rotation sensor; 7. P/N switch on automatic transmission; 8. Auxiliary starter relay; 9. Battery 1....
Fuel pressure check Manometer connection points A. On a 2.7 liter engine: 1. Fuel supply pipe; 2. Gasket; 3. Pressure test kit B. Location of the fuel regulator and distributor on V6 3.4L engines: the arrow indicates the plug 1. To perform...
Checking the Fuel Pressure Regulator Regulator location on 4-cylinder engines 1. Regulator 2. Vacuum hose 3. Return hose 1. Disconnect and plug the fuel pressure regulator vacuum hose. Connect a hand vacuum pump to the regulator. Start the engine and read...
Main relay of the fuel injection system (EFI) and fuel pump relay Checking the main injection relay A. There must be a circuit between the terminals B. Gap 1. Two relays are included in the electrical circuit of the fuel system - the EFI relay and the pump relay. The EFI relay is...
Hoses and connections — check and replace Hose to tube connection 1. Hose 2. Clamp Check and replacement 1. Change the hoses and tubes of the gas line if cracks, dents, rubber gouging are found. 2. Decompress before changing tubes and hoses. 3. Connect the hose...
Fuel tank — removal and installation Fuel tank and related parts 1. Ventilation tube; 2, 5. Gasket; 3. Shut-off valve; 4. Neck; 6. Pillow; 7. Top fill pipe; 8. Case; 9. Cork; 10. Shield; 11. Tank fastening tape; 12. Neck hose; 13. Tube; 14. Buck; 15....
Fuel Level Sensor — Check and Replace Examination 1. Before checking the fuel level sensor, determine the true fuel level. 2. Remove the tank and remove the pump with the sensor. 3. Measure the resistance of the sensor with the float fully lowered (tank...
Air filter — removal and installation Air filter 1. Throttle sensor connector; 2. Gasket; 3. Throttle sensor; 4. Speed sensor connector; 5. Air filter with speed sensor; 6. damper body; 7, 8. Coolant hose N4 and 5 Removing 1. Disconnect the latches and...
Throttle cable — removal and installation Removing 1. Disconnect the battery from the ground. 2. Loosen the cable end locknuts on the damper body. 3. Turn the throttle lever and remove the cable by passing it through the groove in the lever. 4. Disconnect the...
Electronic fuel injection system (EFI system) Units of the electronic fuel injection system of 4-cylinder engines 1. Crankcase ventilation spool; 2. Fuel distributor and nozzle; 3. Throttle angle sensor; 4. Recirculation sensor; 5. Leveling chamber; 6. Diagnostic...
Checking the EFI fuel injection system 1. Check up reliability of all connections with weight. Check system wiring and connectors. Loose electrical connections and poor ground contact can be the cause of many faults that are seen as serious failures. 2....
Throttle body — check and replace Throttle body 4-cylinder engine 1. Crankcase ventilation spool; 2. Cable acceleration in low gear; 3. Damper cable; 4. Vacuum hose; 5. Tank hose with absorber; 6. Idle speed controller connector; 7. Gasket; 8. Cooling...
Idle speed controller (IAC valve) — checking and replacing Attention! Engine idle speed is set by the manufacturer and under normal operating conditions, they do not need to be adjusted. However, if the throttle chamber has been changed, or there are suspicions that the idle...
Fuel distributor and injectors — check and replace Examination See subsection 5.10.1 . Replacement 1. Perform decompression. 2. Disconnect the battery from the ground. 3. Disconnect the crankcase ventilation hose. 4. Remove the equalizing chamber. 5. Label and...
Leveling chamber — removal and installation Leveling chamber and related parts (4-cylinder engines) 1. Recirculation tube; 2. Leveling chamber; 3, 13. Gasket; 4. Petrol pipeline; 5. Comb; 6. Sealant; 7, 17. Ring; 8. Nozzle; 9. Insulator; 10. Collector; 11. Rack;...
Exhaust system service Exhaust system for rear wheel drive vehicles 1. Ring; 2. End section; 3. Gasket; 4. Bracket; 5. Oxygen sensor 1; 6. Front pipe; 7. Limiter; 8. Front heat shield N1; 9. Front heat shield N2; 10. Oxygen sensor 2 To...
System for reducing the toxicity of exhaust gases Mounting locations for units of a typical emission control system on a 2.7 L 4-cylinder engine 1. Recirculation valve; 2. Vacuum valve controlling the recirculation valve; 3. Vacuum distributor controlling the...
Technical data of the emission control system Oxygen sensor heater resistance Cars "Toyota 4 Runner/ Hilux/ Surf" 1996 11 - 16 Ohm Cars "Toyota 4 Runner/ Hilux/ Surf" since 1997 11 - 16 Ohm Recirculation system temperature sensor resistance at 45°С 69 - 89 kOhm at...
Location of devices for toxicity reduction systems 1996 Emission Control and Fuel System Device Location with 2.7L Engine 1. Throttle angle sensor; 2. Temperature sensor of the recirculation system; 3. DLC3 connector; 4. Ignition lock; 5. Gasoline vapor pressure sensor;...