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Yes VW Diesel injection pumps can be rebuilt. The pump needs to be bench tested afterwards using Bosch specs
Check forn 12VDC at the fuel stop solenoid located on the injection pump, no 12V no engine fuel.
in injector pump
The breakdown diagram, of a Lucas injector pump, is a detailed diagram. The breakdown diagram shows specific areas of the injector pump.
there are many models of injection systems. However in the common Bosch system using injection lines and nozzles, you rotate the pump in respect to the crankshaft or camshaft position. This advances or retards the timing depending upon the direction the pump is rotated.
One can find a Bosch fuel pump on the Bosch Auto Parts website. If you don't trust that company then you could go to auto parts forums or look up reviews on Bosch Auto Parts.
Yes the pump feeds them or you could just unplug injector(s)
ITS ON TOP OF THE PUMP.
how do you set injector pump timing for a Nissan cab star? provide a diagram.
Usually the injector pump has failed. You will also want to check the lift pump.
The fuel injector pressure regulator is located in the injector fuel pump. Most pressure regulators cannot be separated from the fuel injector pump.
No it is not a fuel pump problem. It either has a grounded are open circurt. Check wiring to injector. May just be a bad INJECTOR.