can anyone help i have got a 2002 ford focus 1.8tdci,when i go to start it up (1 in 6) it sounds like a cement mixer(very loud) when ticking over , and the throttle doesnt work,if i turn it off and start it up again it is then perfect and runs like a dream,it also can take 2 or 3 attempts to start up (it keeps stalling), but apart from that it runs really smooth,but some mornings it will start first turn.HELP ITS EMBARRASSING..