Always, always, always check the basics. Sister asks for help. BiL away and his car has not been used for 5 weeks and now has a flat battery (1). I remove it (2) and stick it on charge overnight, revisit the following day and refit. Turns over fine but not starting. Some bastards drained the fuel! Took £10 to get it started. (1) Didn't even turn it over or check to see if it was flat! (2) Didn't click that it looked new and terminals were coated in vas so likely that it was OK. Mark