head gasket, inlet manifold gasket , then they tried loads of things to try and get over the fuelling prob . rob suggested changing the Metering unit in the end cos he had eliminated everything else, so i got him another one and he then used his magic and had a play under the bonnet and hooray - the car used to go to 10psi and then misfire like hell and after a few hours on the rollers etc it was showing a lack of fuel . now it runs like a dream and peaks at 18psi and holds about 16 psi . lovely .