FUEL TANK VACUUM - PRESSURE (85 - S3)

DKWW2000 · Post by **DKWW2000** » Tue Sep 09, 2014 9:17 pm

Went to fill up & on undoing fuel cap it hissed & allowed air in, is this normal should the cap have a breather or is there 1 elsewhere?

Pete

mpk490p · Post by **mpk490p** » Tue Sep 09, 2014 9:53 pm

not sure if its normal but mine used to do it a lot especially in the warm weather

Lucky · Post by **Lucky** » Tue Sep 09, 2014 10:01 pm

They do have a breather that vents back into the filler neck

Mine does it too, don't think it's a problem

DKWW2000 · Post by **DKWW2000** » Tue Sep 09, 2014 10:04 pm

Thanks for replies, I thought it might be restricting flow but if all do it I wont worry!
Thanks Pete

mc turbo · Post by **mc turbo** » Fri Sep 12, 2014 8:21 pm

yeah all my rx7s do that & apparently theres a breather pipe from the filler neck that goes to a charcoal canister !

www.RX7fb.com