Okay, any of you foks that have rebuilt your m30 cylinder head - mine's together, she starts, she runs OK as long as I have my foot on the accelerator, but she dies as soon as I take my foot off, even at regular operating temperature. I checked the fault codes using the stomp on the pedal five times routine, and it's showing no faults, not even a idle actuator valve fault - so what gives? Any ideas? I'm lost at this point . . .