The engine has sounded like a diesel for a while . The cam belt service is due now as it's just hit 52k, I have the car for 3 and half years and brought the car with 42k on the clock ,
It's running ok but does sound like a diesel, I have the new parts for the cam belt change and now just need a variator, but since this problem has come up I'll put that on hold .
My mechanic has worked on a lot of alfas so £150 to me is a very good price plus being in London where most places will charge you arms, and both legs .
,but before I do anything ill get him to check this oil pressure issue .
Other than the cam belt needing to be change and now this oil pressure issue the car runs fine , sounds like a diesel but still has it's power and runs fine .