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Why can I get no diesel pressure to my injectors

I change the filter on the water suppressor in after that I could never get it to prime I'm thinking I'm doing something wrong I'm not getting no fuel to my injectors could you help me

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  • Cars & Trucks Master
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The system must be bleed or primed to remove any air. the type vehicle wasn't provided , so I don't know the bleeding procedure

Posted on Mar 30, 2015

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1 Answer

How to prime the injectors and fuel rail after replacing the injectors?


Electromagnetic or electronic fuel injectors are self-priming and all that is needed is to crank the engine, though I believe on later systems the injectors are coded and will not work unless the ECU has been informed the codes have changed. I think this applies more to diesels than petrol engines but on such matters I am not expert...

Staying with diesels for a moment - new injectors on either engine would usually mean fitting a new fuel filter. Sometimes this would require the primary diesel circuit to be bled in order for the high pressure pump to work.
The amount of starter cranking required can be cut by leaving each injector pipe loose in turn until diesel is dribbling from it.

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WELL MOST BOBCATS NOW HAVE ELECTRIC FUEL PUMPS NOW , SO REPRIMEING FILTER IS EASY YOU JUST KEEP CYCLING KEY (NOT TO START) WHEN FILTER IS PRIMED (NOTED IN PITCH CHANGE OF FUEL PUMP SOUND) THEN YOU CAN LOOSEN ONE INJECTOR SUPPLY PIPE (NOT REMOVE) TILL A HINT OF FUEL DRIPS OUT OF IT , CRANK ENGINE TILL IT TRYS TO START , THEN STOP AND TIGHTEN THE INJECTOR PIPE , THEN START NORMALLY ALLOW TO RUN FOR A FEW MINUTES BEFORE RESTORING TO SEVERVACE EVERYTHING
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How do i bleed the air out of the diesel fuel filter on my 2003 C3 1.4hdi?


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I have an F-350 Super Duty Diesel V8 2008 and we ran out of fuel. When we put diesel in it throws out black smoke. How do you check the Fuel pressure? It won't start and we just changed the fuel filters....


Make sure you fill the filters with fuel before you install them. then bleed the line at the fuel filter then move
on to the injectors
loosen the injector line to bleed it one at a time then crank it till no air is coming out tighten that line then do
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Yes it could be the pump, but also it could be a leaking injector or a clogged up diesel filter.

If the injectors are leaking they will be sucking in air and forcing the fuel back to the tank,

you can pour water around each injector to see if any are bubbling. Get the fuel filter changed and have the system bled through before replacing the fuel pump. they are very expensive.

Hope this helps
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Running perfect parked for the evening would not start in the mor


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