300 TDi - no fuel to injectors - Defender Source
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  #1  
Old September 14th, 2017, 04:41 PM
Ugo17
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Ugo Stefano
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300 TDi - no fuel to injectors

Hi there. I have a 300 TDi with fuel coming to the injection pump but not out of the injectors.
Engine crancks but won't start.
Solenoid, filter and fuel pump are OK, bleeding done.
What can it be? Any idea please?
Cheers
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  #2  
Old September 14th, 2017, 05:19 PM
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Robert Davis
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Welcome Stefano:
Sorry you're having fuel delivery issues'
Sounds like you have trapped air in the IP or a bad fuel shutoff solenoid, or a faulty circuit supplying (+) power to the fuel shut-off solenoid.

I always install a 12V fuel pump back just after the sedimenter.
In that way the fuel system is self bleeding and any trapped air is purged in seconds.
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Old September 14th, 2017, 05:26 PM
Ugo17
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Ugo Stefano
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Quote:
Originally Posted by rdavisinva View Post
Welcome Stefano:
Sorry you're having fuel delivery issues'
Sounds like you have trapped air in the IP or a bad fuel shutoff solenoid, or a faulty circuit supplying (+) power to the fuel shut-off solenoid.

I always install a 12V fuel pump back just after the sedimenter.
In that way the fuel system is self bleeding and any trapped air is purged in seconds.
Hi Robert. Thanks for ideas.
I exclude the solenoid, I tested it and works good. Can you tell me more about the "faulty circuit supplying (+) power to the fuel shut-off solenoid" option please.
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Old September 14th, 2017, 07:02 PM
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Doug Crowther
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Turn the key to the on/run position. Using a test light or a meter do you have 12v on the wire to the solenoid ?
The solenoid should make an audible clicking sound as the electro magnet pulls the plunger up.
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Old September 14th, 2017, 09:36 PM
Ugo17
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Ugo Stefano
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Quote:
Originally Posted by Uncle Douglas View Post
Turn the key to the on/run position. Using a test light or a meter do you have 12v on the wire to the solenoid ?
The solenoid should make an audible clicking sound as the electro magnet pulls the plunger up.
Hello Doug. As I wrote a couple of times, the solenoid works properly. Cheers
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Old September 15th, 2017, 06:49 AM
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I think what Doug may be implying is that it is impossible for the solenoid to work and have no fuel at the injectors.

When you say "Solenoid, filter and fuel pump are OK, bleeding done." you are implying that fuel is getting to the injection pump.
If the injection pump solenoid is working, and the injection pump is rotating, and yet still no fuel is getting to the injectors, then there's only one other possible issue, which is the worst case.

That worst case is quite rare. So, how are you making sure that the fuel solenoid is working?
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  #7  
Old September 24th, 2017, 04:31 PM
Ugo17
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Ugo Stefano
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Hi there. So I solved the thing. It wasn't due to solenoid or fuel but to the immobilizer. That was hard to found out but in the end... This may help somebody else in the future, I hope. Cheers
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