juttin

ok so i have a 05 a41.8 amb engine and noticed this valve Part# 06A129101F on top of engine in back covered with a light film of oil . so i took it off today and looked at it and tried to move the diafram inside but was not able to move it . also i tried to spray it out with a carb cleaner and if i held it upside down it leaked out the top (flat side) im thinking this valve should be sealed air tight correct? cleaner shouldnt of leaked out but stayed in there. also does the diafram move inside of this valve? thank you justin

lyleswk

For the part you have referenced, here is a description from "diagnosticator" over on AZ. Guy knows what he is talking about:


"The diaphragm is crimped around the edge and forms a chamber between the top of the diaphragm and the top cover. The bottom side of the diaphragm forms the top of the lower chamber that has the center inlet port and the outlet ports. The top chamber is vented to the ambient air pressure. When the pressure at the outlet port is lower than the crankcase pressure relative to the ambient pressure, the diaphragm is pulled downward and partially blocks the inlet port inside the valve, reducing the volume of crankcase blow by gasses that are pulled out of the crankcase that flow into the tip. When the CC pressure is higher, the diagram moves up away from the inlet port, increasing the flow area inside the PRV and vents more blow by to the TIP. The distance of the bottom side of the diaphragm from the inside end of the inlet port, and the resulting flow area of the blow by gasses in the valve, is determined by a balance between the crankcase blow by volume and pressure, the outside ambient air pressure, and the pressure in the TIP.

When the valve gets old, the diaphragm gets stiff and will not respond to the low pressure differentials that operate the valve normally, effecting crankcase ventilation control accuracy."

Pete@ECSTuning

We have them available below.

Click HERE to order or for more information.



Let me know if you have any questions.

Pete

blazej01

My car is at 55k miles and I think it is time to do the job. Nice and cool outside.

misanorotrs4

In case you haven't picked up a new PCV, they're on Black Friday sale:

https://store.034motorsport.com/pres...late-25mm.html