Mazda CX-5 Service & Repair Manual: Returnless Fuel System
Purpose, Outline
-
Fuel evaporation in the fuel tank is reduced by adjusting the fuel amount (fuel pressure) ejected from the fuel pump and preventing fuel warmed in the engine compartment from returning.
System Diagram
2WD
AWD
Structure
-
The returnless fuel system consists of the following parts:
|
Part name |
Reference |
|
Fuel filter (low-pressure) |
(See FUEL PUMP UNIT [SKYACTIV-G 2.0].) |
|
Fuel filter (high-pressure) |
|
|
Pressure regulator |
|
|
Fuel pump |
Operation
-
Fuel in the fuel tank is pumped out through the fuel filter (low-pressure) by the fuel pump, filtered by the fuel filter (high-pressure), and then regulated to a specified pressure by the pressure regulator. The regulated fuel is sent to the high pressure fuel pump, and unnecessary regulated fuel is returned from the pressure regulator to the fuel tank.
2WD
AWD
Quick Release Connector Removal/Installation
WARNING:
Fuel is very flammable liquid. If fuel spills or leaks from the pressurized
fuel system, it will cause serious injury or death and facility breakage. Fuel
can also irritate skin ...
Fuel Pressure Sensor Inspection
Voltage Inspection
NOTE:
The fuel pressure sensor cannot be removed as a single unit. When replacing
the fuel pressure sensor, replace it together with the fuel distributor as a
single ...
Other materials:
Compression Inspection
WARNING:
Hot engines and oil can cause severe burns. Be careful not to burn yourself
during removal/installation of each component.
Fuel vapor is hazardous. It can very easily ignite, causing serious injury
and damage. Always keep sparks and flames away from fuel.
Fuel ...
Cooling Fan Motor Removal/Installation
WARNING:
Never remove the cooling system cap or loosen the radiator drain plug while
the engine is running, or when the engine and radiator are hot. Scalding engine
coolant and steam may shoot out and cause serious injury. It may also damage
the engine and cooling system.
Tu ...
Push Button Start Inspection
1. Remove the push button start..
2. Verify that the continuity between the push button start terminals is as indicated
in the table.
If the continuity can be verified as indicated in the table, go to the next
step.
If not as indicated in the table, replace the push bu ...
