987.2 S smells of fumes and down on power

[Wollemi]

My 987.2 S has always smelt a bit hot oily from outside the car but very recently it is smelling of fumes (exhaust?) whilst driving and this is a lot more noticeable when driving with the roof down - as if fumes are being sucked into the car. It also feels down on power, not as sharp as it should do.

What sort of things should I be checking for?

(or getting someone to check for me - I am a mechanical incompetent )

[M666LMJ]

Hi buddy. Maybe a trip to Porschetek is required? Hope it's nothing serious.
Mike

[Trev450]

It could be the AOS on the way out.

[ooid]

AOS or fuel sender unit might need replacing?