Help please, guys not sure what i've done ,but i was bootin my ibiza pd100 from standstill ,then there was a muted bang and puff of white smoke from exhaust. engine runnin erractic and white smoke from the exhaust now. smells a bit too of burning. im about quarter mile from home, should i risk drivin it home. hooked up my ebay handheld scanner and could'nt find any codes coming up. Thanks