Having an ongoing problem with air getting into the fuel in my Focus 1.6Tdci. First thing that happened was the car just cut out and diagnostics suggested a fuel rail pressure sensor so that was replaced. Then, following a full service, the car would just cut out every 500 miles or so. Our local garage has changed the sender unit in the tank, pressurised the fuel lines and changed all the seals but the problem still exists. When the car is running it is perfect but I need to get this sorted. It appears that the air builds up in the filter unit until it goes unto the pump then cuts out.
Has anybody else had a similar problem? Can anybody help.........please