My mum n dads mrk1 vrs is curently having starting problems at both cold and warm start. And also at time loss of revs when driving.

My dad has had loads changed on it, fuel pump, cam sensor, timeing checked, ecu tested, wireing comp tested, glow plugs,

Any body have any idea where to go from here?

Thanks, matt.

Firstly has it been scanned with VCDS?

Yes it has. The garage my dad uses specialises in vag cars. Cant remeber faults he was geting. Sorry.