Jaguar X type 2.2D 2009 - Air in the fuel - Fixed #
Posted by Colin Hedger on September 16, 2016, 10:27 pm
Year of Manufacture *: 2009 Engine Size and Code *: 2.2 BG
Hi all, this car has been difficult to start and has broken down due to air in the fuel. I first discovered one of the leak off connectors not sealing properly allowing masses of air down the return line.The return also goes back to the filter recirculating the air until the car broke down due to more air than fuel! Once I'd fixed that I thought I that was the end of it. The return line is now clear fuel until revved hard, and then a small amont of foaming appears which of course travels back to the tank and is deposited right next to the fuel pick up, which in turn then gets dragged back to the filter again as small air bubbles which accumulate in the filter again. My question is: (I hope I'm not going to be shot down for this!)
Is a tiny amount of foaming acceptable or should the return be absolutely and totally free of any air on its way back to the tank?
To end this post - With the leak off leak fixed and just the foaming coming down the return line I carried out extensive road testing without any starting/running problems. The customer has had the car back for 1500miles now without any problems. Chats with mates in the trade confirmed they also had seen air in the fuel in these Ford TDCI systems without being able to find out why. So after spending a ridiculous amount of time trying to work out why the foaming appears, I concluded that I was trying to fix something that maybe was'nt broken, and thats just the way it is? Thanks for looking anyway.