still no joy, the car will sometimes starts, then you rev it up no problem,then when you take your foot off the peddle the engine revs drop off and its cuts out,then with a bit of luck,then it will fire up again after you keep putting your foot on the throttle for about 10 seconds,could it be the map sensor on the blink giving the wrong singles if so how can you check weather its working or not ,because when you pull the connector off the engine will cut out,its just a thourght, or any other ideas ,good spark,fuel, no air leaks and nothing to do with that cold start valve. cheers ,ray