hks BOV not making sound anymore

[yongai27]

my hks bov isnt making a sound anymore when i let off gas. It was acting weird lately, now all of a sudden it doesnt make the pshhhhhhhhhhh sound! does this mean its leaking or something? (my vacuum reads normal) will post video on monday when i borrow friends video camera. thanks all

oh yeah, is there a way to test the bov?

 

[SupraMedical68]

Are you sure you're going into boost? You might want to check your intercooler piping..

 

[RazoE]

check the vacuum line to make sure it's still attached..

 

[yongai27]

everything is attatched for sures. its so weird meng...

 

[A-to-the-J]

Where is the BOV mounted? did the fins break?

 

[yongai27]

its mounted right there

nothing broke!

 

[hvyman]

Spray some wd40 through it.

 

[yongai27]

that sounds kinda sketchy

 

[hvyman]

Its actually not. Since you run a k&n and dont have the pre bov filter that it comes with its likely that its clogged with dirt. Can you feel air coming out of it all?

The hks is the only bov that you sometimes need to do that with also.

 

[Compton74]

Agreed with hvyman mine stopped working recently just ripped her off, cleaned her and oiled her up, and no more issues

 

[yongai27]

Its actually not. Since you run a k&n and dont have the pre bov filter that it comes with its likely that its clogged with dirt. Can you feel air coming out of it all?

The hks is the only bov that you sometimes need to do that with also.

actually when i throttle it from the engine bay, it doesnt even move lol. but i also have to stand at an really odd angle to look at the bov while pressing the throttle linkage lol

 

[yongai27]

http://www.mazdas247.com/forum/showthread.php?123618234-How-To-Take-apart-and-clean-HKS-SSQV
did u guys do something like that o.o

 

[hvyman]

Ya you can do that. Or could just try shooting some wd through both holes.

Also if no air is coming out then any flutter is compressor surge.

 

[yongai27]

uh oh, maybe thats why ive been lacking power lately..is my turbo just completely gone then?

 

[hvyman]

No idea on that. When the bov doesnt open the air back feeds into the turbo giving you the flutter sound. Can kill your turbo and quick, but not always. Bov doesnt add hp either.

 

[yongai27]

yeah i know, i meant like im lacking power maybe cuz my turbo is dying, since my bov is clogged or sm

 

[SupraMedical68]

Is your turbo still spooling when you drive? It may be possible you blew the turbo or the seals went out and that's why you can't hear an audible noise.

I blew a rear CT12 back in '08 and a CT26 last in '09. The CT26 was in bad condition before it was even put in the car, but it soon as it popped I couldn't hear anything from my HKS.

You might want to also test for boost leak to make sure you intercooler piping isn't compromised.

I can't view any pictures so I missed the previous one... Are you running an HKS? Was your turbo fluttering from your BOV?

 

[yongai27]

it was making a sort of flutterish sound, cant really tell cuz exhaust is too damn loud lol. then it stopped altogether

 

[yongai27]

and yes it is an hks

 

[D.J.T.]

Im having the exact same problem. Only when i drive it hard enough ill hear the PSHH. sometimes it doesn't do it at all. At first when i had the vacuum filter i worked fine & it opened easily while pulling the throttle cable. But now the pre filter was toast since the heat melted it into a 90 degree shape so i removed it. & for some reason i have oil in the hard tube from the vacuum source. so spraying WD40 into the hole of the vacuum source in the BOV will help?

Oh & yes the stock vacuum source has good vacuum