I apologize if this topic has been covered...I did not find the specific information I was looking for. Basically, I have the manifold "vacuum lines", (I now know--thanks to this site--that the air feed to the check valves is basically filtered air prior to the throttle body (butterfly plates) going to the oil injectors. I see the main (larger) hose that feeds down from the upper intake plenum (surge tank) to the cylindrical disk device that goes to the 4 hoses and then to the top of each oil injector check valve. I think I've seen some reference in the FSM to pay attention to connect the yellow or white to certain injector check valves. If I look closely to the lines, I think I can see that 2 are marked with a white dot and 2 are marked with a yellow dot.
So, basically, I can't tell which ones connect to which check valves. I know 2 go to the lower manifold oil injectors and 2 go the rotor housing injectors. I don't have the experience with the rotary, but it seems to me all of them are connected mutually through the cylindrical disk?? Does it matter which hose connects to which injector check valve? And, if so, what is the theory of operation?...if I can ask.
Thanks in advance for any information...(new to the Rx7 rotary engine). Jeff

 

The only thing I could think of that'd require them going to specific oil injectors would be if they had restrictor pills in the lines. I've replaced quite a few of them over the years and I've never seen any in the lines. I've replaced the lines and ran them to whichever injector on many cars and never had an issue.

 

Thank you, I'm guessing the same. I will probably "dissect" the device and the lines since they are hardened and I won't re-install them. But, the confidence of your experience is what I'm looking for.

Jeff

 

That's probably not a bad idea and generally what I do before replacing marked lines. Cut them open and look for any restrictor pills. I'm almost positive there's nothing special about the splitter though.

 

The air hose coming off that splitter can go to any of the oil injectors. Matters not. The original hose were shaped/formed to fit only go to a specific oil injector, but that's only because they were molded/cut to length for that specific oil injector (muddled answer).

Bottom line............matters not which nipple on the splitter goes to which oil injector.