How do I know if my high-pressure fuel pump is bad?
Symptoms of a high-pressure fuel pump failure are:
- Delayed start of the engine.
- Hesitation or sputtering in acceleration between 2000 RPM to 4000 RPM.
- High engine temperatures.
- Vehicle stalling due to exertion or temperature.
- Fuel pressure gauge reading low measurements.
- Poor gas mileage.
What causes high fuel pump pressure?
As we discussed, high fuel pressure means that the air to fuel ratio is off-kilter. The causes for this imbalance of fuel pressure typically include either a bad fuel regulator or a clogged return line.
Where is the fuel pressure regulator on a Toyota RAV4?
Most modern vehicles have the fuel pressure regulator mounted on the fuel rail. Some may be in the fuel pump assembly, but this is rarely the case (although it is happening more and more). If you think that you may need a fuel pressure regulator for your Toyota Rav4, they are relatively affordable.
What to do if your Toyota RAV4 has an open flame?
Toyota RAV4 Service Manual/ 2Az-fe fuel/ Fuel system Precaution Before working on fuel system Do not work near an open flame. Keep gasoline away from rubber and leather parts. Discharge the fuel pressure before disconnecting the fuel line to prevent gasoline from spilling out. Refer to the following procedure. Discharge fuel pressure Caution:
When to disconnect the fuel line in a Toyota RAV4?
Discharge fuel system pressure procedures must be performed before disconnecting any part of the fuel system. After performing the discharge fuel system pressure procedures, pressure will remain in the fuel line. When disconnecting the fuel line, place a cloth or equivalent over fittings to reduce the risk of fuel spray.
What is the service manual for a Toyota RAV4?
Toyota RAV4 Service Manual: Fuel system Toyota RAV4 Service Manual/ 2Az-fe fuel/ Fuel system Precaution Before working on fuel system Do not work near an open flame. Keep gasoline away from rubber and leather parts. Discharge the fuel pressure before disconnecting the fuel line to prevent gasoline from spilling out.