so, for a while i know i have had air leaking from somewhere, because there is A. i hissing sound when you give it some throttle. i.e. put your foot on the accelerator, sssssss . . vroom . . . and B. quite a loss of acceleration . . . this being. i have the 16v 1.6 and i couldnt overtake a transit going up the link road this morning. im preti sure the air is coming from behind the rocker cover somewhere.
so anyone know where it would probably be coming from?
help/advice would be much apreciated