Almost positive it is sticking or faulty cause when I apply the brake at idle the revs drop about 300rmps. Does anyone know how much one is from mazda or does anyone have a fully functional one for sale?

 

Well, clean It. First remove the BAC Valve. Scrap all gasket off It leaving a clean mating surface for reinstall. Give It a shot of WD-40 and allow It to sit In the opening momentarily. From there, I rigged up two 18awg wires with two 1/4" female connectors. Apply 12v from the Battery to really work out the crud In the Valve. Do this a few times and end It with compressed air blowing out the residue. Reinstall (with new gasket) and observe for any differences.

I followed the same procedure - at a time of not needing to. I did this as a reprocussion, or a "just In case" type of deal.

 

If it is broke cleaning may not do any good. I'd suggest you test it per the FSM first.

Also, the following is a BAC cleaning how to.
http://www.1300cc.com/howto/how2/bac.htm

 

That howto is for a turbo, is it the same for N/A?

 

For my S5 NA I had to take off the intake hose that wasnt letting me get to it, then you take it off I think 12mm wrench 2 or 3 diff bolts, then I sprayed all the opening with intake cleaner and let it sit then I scraped any left over sticking crud off, there is also coolant hoses connecting to it, you might want to pinch them with something or things can get messy

 

Here's some info that may help.................

URL]https://www.rx7club.com/showthread.php?s=&threadid=116449[/URL]

Curtis

 

TII and N/A BACV's are interchangeable.

Yep, the howto will work for both.