Disaster strikes

Two miles into the first stage ( Abbey St Bathans ) the car starts to lose power, we struggle on, fiddling with fuel pump switches etc as it felt like fuel starvation, the it lapses onto 3 intermittantley. We reach the end of the stage and find a little oil on the plugs leads from oil pressure pipe connection, we clean this off and start stage 2. Straight away it is apparent things are not right and within a mile the engine loses all power.We whip the blogs out and find 3 are burnt out.After the stage is over the service crew arrive to recover us, but we try some new plugs and it starts. Within a few hundred yards it conks out again. Back home I find there is no compression at all on No1 or No2.