My 2012 transit miles minibus RWD has been in the garage for 4 months. They have changed the high pressure fuel pump but it still won’t start. They thought there is air in the fuel line. I have had enough of that garage so it’s no longer there.
Wondering how I go about getting all the air out of the fuel system and hopefully it will start. It has 2 new batteries and fuel filter installed. There is a fault code on the EGR valve & glowplug No.1 but it started fine with these problems before.
It was around -30c when the problem first started so wondering if there was some water in the fuel that has frozen & cracked something to now let air in.
Any help would be great.

