Hissing blow off valves!

[Rotary Rex7]

Hello peeps

Just a quick question.

I have a 92 RX7 and it\'s hissing like a snake on speed!
After a look round under the bonnet we traced the sound to the standard blow off valve.
It hisses until i put my foot down a bit and then blows off in the normal way but if i drive it slow then it hisses all the time.

has any one else had this problem? or is it a normal thing with the FD?

many thanks
Rotary Rex7

[Christopher]

Hi, I test drove a black 1992 RX-7 in Byfleet that did that. It had a Blitz BOV, but Im not sure if it was ment ot though.

[g11ary]

think of the times thatand the waste open, probably needs new diaphram or spring, not sure how they operate.