1985 GSL-SE (EFI)...Trying to identify what appears to be a check valve. This is not the delay check valve off of the thermal valve. Here are a few pics showing the part I'm needing. Can anyone help me find this part?

 

Which nipple does the one in question go to?

 

Third one from the top, like it shows it the diagram!

 

is this not the same as the thread started here?

https://www.rx7club.com/1st-generati...985-a-1168993/

 

Yes it is, I guess I forget to post this under that thread, but when I went to check the part, it wasn’t the same.

 

First off, you're confusing the locals because you're posting multiple times about the same issue (*if this is still the same issue). The part you have circled above is the 1-to-4 distribution diaphragm valve that pulses air pressure to the Oil Injector fittings on the intake and housings, of which there are 4. The "one" input is run from the front of the RE-EGI air box and provides air pressure pulses to the "check valve" which has a diaphragm inside that pulses with the intake air box vacuum. As that diaphragm pulses, it sends pulsed air to the 4 Oil Injector fittings, which works as a kind of micro pump to squirt tiny amounts of oil into the intake air path.

Keep in mind that the oil pump and Oil Metering valve assembly control the volume of oil being passed along the clear lines going to each Oil Injector fitting, but to get them to atomize oil so it can be sprayed more effectively in the intake, a pulsed vacuum source is used. The reason for the diaphragm inside is to prevent oil being sucked up through the air lines into the RE-EGI air box, which is counter to the purpose of having Oil Injectors closer to the Apex Seals theyre designed to lubricate.