Scott 89t2

running the fuel rails in parallel won't effect anything right? it should be better. look here.

https://www.rx7club.com/vforums/show...threadid=17042

thanks

hypntyz7

That is his problem. I have done this on reinstalls before myself, and it is really easy to look over, and hard to diagnose. You MUST get fuel to the primaries first, then secondaries, with the FPR last in the link. There are 2 fuel outlets on the stock vacuum spider, and you need to trace down which is supply(leads to primary rail) and which is return, coming off of FPR. This MUST be correct.Supply *should* be the metal line that is closer to the front of the spider, return the rear one, unless they are bent. Get a spare and check it, or check yours, either way. Why would you want them run in parallel anyway> What did you all do, tee in 2 supply lines and 2 return lines? Just put it back stock :-)

mazdaspeed7

I think its more of a waste, and is unnecessary. If youre having problems with the fuel pressure dropping at high injector duty cycles, you need a bettere fuel pump.

Scott 89t2

hypntyz7 I guess you didn't see the pic. the vacum spider is gone. as is the stock FPR, the line goes from the pump, T's into the end of both rails. then T's out the other end of the rails to the FPR. so the presure is the same in both rails. (40psi) but we are not getting fuel into the engine. it has to be an electric prob. either computer (haltech) or wiring.

I am just trying to comfirm that this setup is ok, which I know is.

and to mazdaspeed7, it's not a waste of time for high power engines. you just can't get the fuel to the last injector fast enough. ever seen an aftermarket rail for a 4 banger ie mr2 turbo? it's split into 2 with 2 return lines so the fuel doesn't have to go across all 4 injectors, you need this for anything over 350-400hp.

Scott 89t2

top, where's ReTed when you need him

does anyone have the instructions for the sx reg? does it appear to be hooked up right. I havn't seen any nor did I do it.

the line off the reg does go the the return, and the line T'ing into the rails is from the pump. you can't see but they are right.


http://www.1300cc.com/rx7pics/adrian/eng8.jpg

Scott