mk6 fuel

[mtnz]

Mk6 duratorq and if we bleed the injectors theres mostly air and very small amounts of fuel at the injectors whether we hand pump at the fuel filter or try to turn engine over.

However cannot see where air might be getting in, any ideas?

No leaking fuel around the filter, does that mean filter is airtight?

Any tips on how detect leak?

If there's air and hardly any fuel when hand pumping at the filter, does the mean the fuel pump is not the problem, or could it still be the fuel pump that's faulty?

IMG_20221123_165414.jpg

Photo of filter/ housing attached.[

[knobby1]

Mk6 duratorq and if we bleed the injectors theres mostly air and very small amounts of fuel at the injectors whether we hand pump at the fuel filter or try to turn engine over.

However cannot see where air might be getting in, any ideas?

No leaking fuel around the filter, does that mean filter is airtight?

Any tips on how detect leak?

If there's air and hardly any fuel when hand pumping at the filter, does the mean the fuel pump is not the problem, or could it still be the fuel pump that's faulty?

IMG_20221123_165414.jpg

Photo of filter/ housing attached.[

Lots of places for air to get in, pretty much anywhere along the low pressure side of the fuel system. Filter head is known to crack, poor quality fuel filters often leak air in around the main seal. Possible split in the pick-up line from the tank. Injector leack-off lines and their O-rings....the four fuel lines on the filter head have O-rings which can leak air.

Rare for them to leak fuel out as they're normally under a slight vacuum when the engine is running. I suspect it may be "upstream" of the hand pump though as you're still getting air when using it....supply line from tank to filter head maybe..?? Check all four O-rings and inspect the filter head housing just in case.

Lord Knobrot

[rotory]

6133BC1E-4115-4F30-8BBF-2FFEE1AD26E9.jpeg

Best to check the leak-off pipe, mine was loosing prime through a pinhole. It was chafing in the earthing stud, indicated in the photy.

[mtnz]

Hi, eventually the answer to this was found to be that the (brand new) fuel filter was not forming a complete seal with the housing due to very small indentations in the filter top that I believe were formed after the filter was forced into the housing by Ford mechanics.

Another local mechanic suggested he change the new filter for another one, and he showed me the old filter damage and put in the new one and since then its been fine.