Faced with the high cost of a new valve, and used ones that weren't any good, I figured out this method of repairing the old EGR. Most of them get dried out and leaky, proved by imersing it in a pot of water and blowing thru a hose connected to the diaphragm. Lots of bubble came out of the little tiny cracks in the rubber, causing a minor vacuum leak if it's on the engine.

I cleaned out all the passages with thin wire and pipe cleaners. Then I used 3M 5200 marine sealant and smeared it all over the visible parts of the rubber diaphragm until it was completely covered with a smooth coat. I used a thin wooden stick to get in the hard-to-reach places. Careful with this stuff - its messy and it stains. Then let it dry for 48 hours. Sealed perfectly!

I don't know how well 5200 resists heat over time, but so far its holding up OK.

 

good stuff

 

Another way to solve the problem (cheaper too) is to just remove all that ****!

Too bad some people live in states that have emissions testing each year and crap like that.

 

the valve is so buried on the fc's that they never check, just as long as its there, it doesnt have to work

mike

 

FWIW, I'm selling a brand new one for $120 for a s4 na.

 

 

 

Also a 4 yr old ACV for $100! Click here for pics and details. https://www.rx7club.com/forum/showth...hreadid=139748