Humming Filler Cap
 

My 996 lives in the House :D Doesnt take up too much space and makes a good clothes horse!! However it makes a very anoying intermitant humming noise that come from the filler cap. Its quite loud Any ideas???

It's depressurising - the pump creates a vacuum in the tank and it has a valve in there somewhere to stop it from imploding due to differences in pressure.

You can sometimes stop it by simply opening up the filler cap and closing it again.

was going to say petrol vapours expanding when the central heating comes on? but that is what the petrol tank breather is for isnt it?

It's just humming a tune Mr C, cos it's warm and happy.
Mine does the same.

:D

Same here I think it's quite funny :lol::lol::lol::lol::lol::lol::lol:


Age

My car used to do that. took me ages to work out where the noise was coming from! Just open the cap and it goes away for a while.

Leave the filler cap open and you get all giggly for free !!
hehehehe

ANON

I told the new GF that it had feelings and is clearly Jealous about you being here.
Managed to keep it going most of the Evening. :D