How do you remove the old pcv valve (2006/V6)? I tried to twist it off by hand, but I'. getting nowhere.

 

On my '99 1.8L Protege LX, the PCV valve is inserted into a big grommet, and you just pry or manhandle it out. I replace both the PCV valve and the grommet; take it with you when you buy the PCV. You're safe using auto parts replacements, and they sell the valves and the grommets too.
PS: Once it's out and cleaned up a bit, check if it rattles, and suck and blow on it to see if the check valve works; you may find there's nothing wrong with it. At the same time, check the hose condition (the hose is more prone to fail than the valve).

 

You have to try & fit your hand between the firewall & intake manifold. The PCV valve twists out. It is a tight fit, but can be done w/o removing the intake manifold.

 

How many miles on your mazda6s? I plan to change it on 45,000 miles. What is part number on OEM PCV?

 

ajc1-13-890a

 

Thanks, in mazda6club, someone said ajc1-13-890b.

What difference is Ajc1-13-890a and Ajc1-13-890b? Mine is 06 mazda 6s sedan. Which one is good?

Thanks

 

There is no B from Mazda. The A is the most current.

-Sheldon.

 

I have over 71,000 miles on it and this is the first time that I have changed the valve.

 

Had to change some parts this morning due to Engine Light and Emissions. "Lean Engine" Code. Cracked Air Box Hose and cracked PCV hose, figured I might as well change PCV while I was under the hood. Attempting to get at this valve isnt easy with the room given without removing the Intake Manifold.

**Heres The Trick**

I acquired some new 5/8" Hose (several feet too many at Home Depot). Removed Old Hose from old PCV Valve, cleaned oil off old Valve with a clean rag. Took a foot and a half length of the new TIGHT FITTING Hose and pressed it onto the old Valve to use as a Driver to turn the old Vavle out Counterclockwise...Then attatch the new Valve to the new length and install it...Trim to length, and DONE!

Hope this helps a few of You!

 

Forgot to mention, there is a locking tab which will need to be released by a flathead or other tool of Your choice.