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depressurising fuel system (where is my fuel pump fuse)

ssmith93
ssmith93
in General Ford Related Discussions

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I am intending to replace the gaskets for the high-pressure fuel pump tomorrow on my 2.0 Diesel Kuga. (T7MD engine, similar to T7MA / T7MB / T8MA)

 

I need to depressurise the fuel system before I start work on it, the haynes manual reccomends starting the engine and then removal of the fuel pump fuse to depressurise it. 

 

I have consulted the manual and can't find a specific fuel pump fuse on my model. I was wondering if anyone could point me in the right direction.

 

Thanks in advance.

  • Quote


    1 hour ago, ssmith93 said:

    I have consulted the manual and can't find a specific fuel pump fuse on my model.

    I consulted the Ford Kuga Owners Handbook and found it to be the very first fuse listed in the passenger compartment fuesbox  🤣

    Fuse 56 -- https://www.fordservicecontent.com/Ford_Content/vdirsnet/OwnerManual/Home/Content?variantid=6573&languageCode=en&countryCode=USA&Uid=G1932909&ProcUid=G1932910&userMarket=GBR&div=f&vFilteringEnabled=False&buildtype=web

    fuse.JPG

  • Quote
    • Author

    @unofix That is in the passenger footwell, I think it is the fuse for the lift fuel pump in the fuel tank rather than the high-pressure fuel pump located on the engine.

    I'm not 100% certain though

  • Quote
    3 minutes ago, ssmith93 said:

    I think it is the fuse for the lift fuel pump in the fuel tank rather than the high-pressure fuel pump located on the engine.

    I make no judgement on which pump it's for, but regardless if you cut off the fuel supply by removing the fuse the the high-pressure pump will run out of fuel.

  • Quote
    • Author

    @unofix good point!

     

    I have this wiring diagram for the 'fuel pump', which refers to fuse F56 as well, and whilst it doesn't specify which fuel pump it is talking about, with the other things it is connected to it does look like that might be the high-pressure fuel pump. I find it strange that it would be located in the car rather than the engine bay with the others

    Screenshot 2024-06-07 at 21.54.48.png

     

    EDIT: Ignore what I said above - looks like F56 is for the fuel pump sender unit i.e the lift pump in the fuel tank. Not the high pressure pump i'm after!

    Edited by ssmith93

  • Quote

    Left overnight and the pressure will have pretty much gone. When we do injector replac ments, cracking off the fuel pipe unions on the fuel rail after 15 mins and there's no pressure . 

  • Quote
    • Like 2
    • Thanks 1

    I've worked on a lot of common rail and PD engines and never depressurised the fuel system either.

  • Quote

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