Just came home from work and noticed that my car is making a funny noise. Oped the hood and noticed that the noise is coming from the Tial BOV. The BOV is stuck open on idle and will not stay close. I dont know the reason this is happening. The car is speed density with 35r kit from ETS with all bolt ons. How do i fix it and will it hurt driving it that way? Thanks guys.

 

Mike pop it open and check the spring...

 

My god... open it obviously.

 

you are pulling more vacuum than the spring is rated for

 

^^ TIALSport, perhaps a primer on how to pick a spring would be very helpful to a number of members. Could you describe the method (if there is something more than vacuum estimates based on measurement)?

 

Yes definately the spring. Tial is a quality brand BOV...

 

I took it all apart and the spring looks fine and no damage anywhere....it never did that before. Its basically stays open as soon as the car comes to operating temp. As soon as i press on the throttle, it goes away and opens to vent. Then once idle, it stays open slightly.
Should i go to a stiffer spring?

 

SickSilver, where did you get the BOV from? There are Tial copies out there that just don't cut it...