Right guys ive changed the fuel pump relay, changed the dizzy cap, checked all boost hoses, car starts from cold no probs then after a minute or so just drops the revs and dies, then doesnt want to start again, left it for a few mins and got it going again and kept the revs on by adjusting the accelerator cable and it just started surging up and down by 200 revs, checked all leads and plugs for spark all fine, so anybody any more ideas, anybody think it could be metering unit?