6D125 Used Fuel Injection Pump 6156 - 71 - 1112 Pc400 - 7 For
Excavator PC450 - 7
Specification
| Part Name: Fuel pump | Pump code: 094000-0463 |
| Category: Spare parts | cylinders number: 6 |
| Condition: Original Used | Engine Type: Diesel |
| Type: Electric injection | Test staus: normal |
| Application: Excavator | Part number: 6156 - 71 - 1112 |
Description
How the fuel system works?
The fixed-jet carburettor resembles the simpler variable-jet typ in
having a venturi - a constricted neck - through which air flows on
its way to the engine.
The partial vacuum caused by increased air speed through the
venturi sucks fuel through a jet to mix with the air.
Similarly, air flow is controlled by a throttle flap linked to the
accelerator pedal, to regulate engine speed.
Above the throttle a choke flap partially blocks the air flow, to
give a richer mixture for starting. As in all carburettors , a
float chamber provides a steady supply of fuel.
What is a electronic fuel inection pump?
Electronic fuel injection is a delivery system that squirts a fine
mist of fuel into the combustion chambers of the engine. A computer
controls the system, closely monitoring factors such as the
position of the throttle, the air-fuel ratio, and the contents of
the exhaust. Because the system does not use a pre-existing force,
such as vacuum, to draw the fuel along the lines, the fuel pump
must be located at the source — that is, inside or next to the fuel
tank itself. The pump is electronic, meaning that it is powered and
controlled electronically. Sometimes, its operation can be
identified by a soft, steady humming sound coming from the rear of
the car.
What happens if the fuel pump fails?
Fuel pump failure is not uncommon, particularly in cars with
electronic fuel injection. Usually, when it fails, a car will
simply sputter and die, and will not restart. Essentially, a car
with this failure will act like it is out of gas, even when there
is gas in the tank. Fuel pump failure can be verified by checking
the fuel delivery end of the system; if no fuel is being delivered
to the engine, the fuel pump has most likely failed.
About replacing an electronic fuel pump
Replacing an electronic fuel pump can be tricky business. In some
cars, it is located in an area that is easy to access from
underneath the car. Other cars have an access panel in the interior
of the car that can be removed to
reach the fuel pump. Still other cars require the fuel tank to be
siphoned and removed, or dropped, before the pump can be accessed.
