I've been having a few issues with my ED30 of late (I've been an owner for around a year now), it's been idling rough with the engine management light on. Under diagnostics all roads seem to point at an air leak in the vacuum system.
Upon inspecting my engine bay I can see a value that looks like it's meant to have a pipe on it (see pics below), however I have no idea where the pipe goes to. When running the engine, the car is sucking air through the hole, therefore as a temporary measure I have plugged it, which has resolved the idling issue and kept the engine light off. As above, this is only the temporary fix until I can workout where the pipe is meant to go...
So please, would one of you kind ED30 geniuses tell me what pipe I am missing?? Beers will be rewarded to the winner!!