oil leaking from pressure switch under bonnet is it easy to replace
I'm assuming this is on a 1.2 Corsa? It's a common problem. It's very easy to do - make sure the engine is cold as it's near the manifold and you could burn yourself. Disconnect the electrical connector and remove the pressure switch - I think you need a 24mm spanner. Screw in new pressure switch (being careful not to cross thread it) and reconnect electrical connector. Top up oil if it's lost some from the leak.
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