Warthog

Hello gang,

My friend (not me honest!) put diesel in his gpz by mistake. I don't know if he tried to start it or not, but he realised his mistake, drained the tank, but it wouldn't start. He now tells me he has drained the carbs 8 times but it still won't fire with new petrol in (it does turn over). Any ideas what to do? Are the spark plugs bust or something?

Cheers