Petrol smell
 

Sometimes my 180 has a distinct petrol smell which seems to be coming through the heater fans , any ideas chaps

leaky injector pipes or fuel rail, chack all the clips and hoses on the fuel filter, failing that a match will definately find ot lol

checked all rails , clips etc even had it checked over by a very reputable garage they cant find any fault

Petrol tank OK, not rusty?????

Is it worse if you fill the tank up with fuel!!!

sounds stupid but as it's coming through the heaters it's not an external smell is it? maybe you follow another car with a fuel leak and
yours is sucking up the fumes?

Check all engine breather pipes and maybe manifold joints, sometimes fumes can enter the cockpit from a poor joint.

Check your downpipe had this happen to me, my downpipe had split/corroded.