Did a boost leak test and found massive leak from the place circuled in the picture. Can someone help me out at how to fix it and explain what this part is doin?

 

Looks like the iacv but not

 

Bump, I also just found a big leak here. Any suggestions on this?

 

Replace the O Ring. Undo the screw and a little plug will pop out. The O ring dries up and doesn't seal worth a ****. You should probably do shaft seals and the BISS O ring while you're at it. They all leak.

 

Ok. Where can I find this O-ring? From what I've read in the last hour, it's an unconventional size and hard to obtain at regular. Has anyone else bought just this o-ring, and if so, where?

 

Contact Mil Spec or Buschur or MAPerformance and they should be able to help you out. I think Mil Spec sells the o-ring seal, check out their website, www.mil-spec.org

 

I believe its called the "IAC warm-up flapper valve o-ring"

Should be able to get it from any oem parts website

 

Is this it?

http://www.streettunedmotorsports.co...ller_oring.htm

 

i had a similar leak there and also added high temp silicone sealant to help. The oring is not impossible to find, i believe i got mine from a generic assortment from a local autoparts store

 

No thats the o-ring that goes around the IAC assembly

 

I found a set of o-rings that Home Depot sells that works. Held 25psi in a boost leak test perfectly fine:

http://www.homedepot.com/p/DANCO-40-...6754/100579460 (the real ones do not look like the donut that the image depicts)

I'm not sure how long it'll last since it's made for faucets, but I have yet to find the right size anywhere else.