FUEL PUMP
EF & EC-654prose procedureIMPORTANT
The fuel pump cannot be disassembled.
WARNING
Before starting to work on any part of fuel system, disconnect ground cable from battery.
When disconnecting fuel hoses, use a container to catch fuel remaining in the hoses.
Fuel Pump Inspection
- 1Flush pump by immersing it in a fuel bath and operating rocker arm a number of times.
- 2Drain fuel from fuel pump. Then block off the inlet port and check that pump arm does not move.
SEF507C - 3Remove your finger from the inlet port and listen for a suction sound which will confirm that a sufficient suction was produced.
- 4Block off outlet port and return port and once again operate the pump arm. After air pressure has been built up, confirm that the pressure remains for two or three seconds.
SEF508C - 5Put a finger over the outlet port and return port and again build up pressure in the pump. Then submerse the pump in a fuel bath and check for air leaks.
Fuel pressure test
- 1Connect T-connector and a suitable pressure gauge.
SEF509C - 2Disconnect fuel return hose and plug up outlet tube for return.
- 3Check fuel pressure with engine running at various speeds.Fuel pump pressure: 19.6 - 26.5 kPa (0.196 - 0.265 bar, 0.20 - 0.27 kg/cm², 2.8 - 3.8 psi)If out of specification, replace fuel pump.
| Specification | Value |
|---|---|
| Fuel pump pressure | 19.6 - 26.5kPa0.196 - 0.265bar0.20 - 0.27kg/cm²2.8 - 3.8psi |
Fuel pump pressure
19.6 - 26.5kPa0.196 - 0.265bar0.20 - 0.27kg/cm²2.8 - 3.8psi