hi all new member hopw someone can help me . i have a 2004 lc3 which has now 84k .just recently its running as if there,s air being sucked in ( it is diesel) and cant use it at all.the strange thing is when its stood in my drivway it starts first touch and will rev up no problem all day as soon as i take it out it just trys to stop even coasting in gear HELP thanks