I got a fiesta turbo and the guy said it needed a fuel pump i got a new one and the car is still the same it starts and idles revs a little but as sson as you lift the clutch it cuts out.It as if there petrol getting there and when you need it it`s not the petrol is returning to the tank so there are no blockages.I have had a look and relised it has got a escort rs head someone told me you need a conversion plate to fit these to your fiesta rs can anyone help on this as it getting annoying.

 

Sounds like its an MFi head fitted to an EFi engine. Don't quite know what happens when this is done but itsw not advised. Your best bet is to get an EFi head for it mate.

 

How do you know it's got an Escort RS head?

As long as the head was machined around the inlet ports where the EFI injectors go it should be perfectly OK.

Are you sure the MAP sensor is plumbed in correctly? The vacuum hose should go straight into the inlet manifold. It should have any T pieces for boost gauages or dump valves. Is the plug fully pushed in?