i'm currently driving a 2003 uk wrx. its running standard other than exhaust.
engine management light has come on and when driven i smell "burning rubber/oil" from the air vents. when the bonnet is open there is a bad smell and slight "smoke" coming from low in engine bay, kind of behind the steering wheel.
oil and coolant appear fine, performance appears fine, there is no over heating.
any ideas what might be wrong.
radiator was replaced a few months back.

 

camshaft cover "Rocker cover" Gasket by the sound of it

 

Id guess rocker gaskets.

 

is it a major ?

 

Nope. Easy fix

 

what would be a ball park figure to have it repaired ?

 

buy a set of gaskets and change it yourself its not a hard job and wont take very long
to change,