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Thread: Diesel purge with 3 line filter ?

  1. #1
    Join Date
    Jan 2020
    Location
    Adelaide
    Posts
    91

    Diesel purge with 3 line filter ?

    How the hell are you ment to do a diesel purge on a 1.6 TDI that has a 3 line fuel filter?
    I see that the fuel rail returns to the filter and the injectors return to the fuel pump and the fuel tank.
    Is the tank supply line lopped back into the tank return line and both fuel rail and injector returning into the purge bottle along with the high pressure fuel pump line?





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  2. #2
    Join Date
    Jan 2020
    Location
    Adelaide
    Posts
    91
    Thread Starter

    So as it turns out not every fuel pump can do a purge on its own unless itís got a feed pressure of 6bar

    The CAYB 1.6 came with two types of fuel pumps

    One with a itís own pre delivery pump and one without.
    The one without gets its pre delivery pressure from the fuel tank pump at 6bar

    So anyone who has the fuel filter with the 3 lines you will need a external pump to deliver 6bar of pressure to the high pressure fuel pump
    Not one YouTube video mentions this.


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