Hi can anyone help,my disco developed a major misfire and lack of power a few weeks ago after changing plugs leads etc,ran fine to start with then on the way home became lumpy and didn't want to run at low revs,now it starts lovely when cold and after a few mins on tickover will begin to misfire worse on lpg but if you can get the revs up it seems fine,any sugestions please,i'm missing that v8 noise,thanks in anticipation,Mark