The 150 seems more documented for chocolate cam. My 115 definitely exhibits symptoms of it though. I've got my old laptop on charge to check a few things when I get to work tomorrow.
Looking on eurocarparts the parts aren't too expensive. I think you'd be better off getting a reasonably economical petrol car.
Looking on eurocarparts the parts aren't too expensive. I think you'd be better off getting a reasonably economical petrol car.