I'm hearing the DV staying open on my car as I start accelerating, when i chnge gear it still whoooshes, but when you drive along I can hear the air still coming from it escaping.
i've sprayed it with silcone lubricant ans it still sticking open.


is it a DV problem that can be fixed or is it broke.




btw.. this is on my smart car but think the principle will still be the same on any car?

 

take it apart and give it a good clean check springs are ok easy to do . you can buy stronger spring if needed

 

a lot of forge use diaphragm dump valves that can split try this site for info and ebay for spare diaphragms

Dump Valve - Everything About Dump Valves

 

Try WD40, on my fist scoob it came with a bailey dump valve and it was forever sticking and just used to spray it with that and it would solve it.

Aaron

 

cheers, i'll whip it off tomorrow and spray it again.

 

update:

took it off,
took ot to bits,
both srings snapped!!

cleaned it all up thenn Emailed FORGE asking do i need service kit or just springs.. and which ones.

Email from forge (Peter) came back 10mins later (6:23pm) and he said he'd send ne new springs and service kit out to me.... FOC!!!!!

can't say fairer than that