Technical 2.8jtd fuel shut off

Currently reading:
Technical 2.8jtd fuel shut off

theoneandonly

Active member
Joined
Nov 18, 2020
Messages
361
Location
Northamptonshire
A friends problem appears to be the fuel shut off solenoid / valve is sticking. switches the ignition off it continues to run
Problem is he cannot locate it to test any further.
Any ideas where it is on a 2004 2.8jtd.
 

Communicator

Well-known member
Joined
Aug 3, 2019
Messages
914
Common rail engines, of which the JTD and Multijet are examples, do not have a fuel cut off solenoid which is feature of earlier engines.

The injectors are electrically controlled by the engine ECU.

Hence for possible causes faulty injectors, faulty ECU, incorrect fuel rail pressure should be considered. Also is it possible that the ECU is permanently energised due to a faulty ignition switch, or even the main injection relay. Wiring faults are also a possibility that should be excluded.

If the engine is in poor condition, it may be possible for the engine to run on by burning the engine oil.

I am assuming that the vehicle has the UFI (so called green) fuel filter and is without EGR. I am attaching pdf copies of the appropriate eLearn diagrams for this combination.
 

Attachments

  • eLearn E5050-1b Engine Management UFI Filter.pdf
    152.1 KB · Views: 27
  • eLearn E5050-2b Engine Management without EGR.pdf
    57.2 KB · Views: 27
Top