jmike575

I have a 88 gxl turbo 6 port. long story short i just got the car running after 7 years. I kept getting taken over engines and ems systems got discouraged and then my wife told me to go ahead and fix it how ever I could so she got me back into it. but while I was swapping engines I guess I lost my high imp injectors and put low ones in it and now I have a throttle drop about half throttle. Could the injectors do this?

misterstyx69

iTrader: (142)

How can you put LO's in if the harness will not accept them?
Info from FAQ's:
What size injectors does my RX-7 use? What colour are they?
Year Engine Plug Size Colour Part #
84-85 13B NA, low square center, 680cc, orange, 195500-0900
86-87 13B NA, low square center, 460cc, red, 195500-1350
86-87 13B Turbo, low square center, 550cc, tan, 195500-1370
88 13B NA, high square offset, 460cc, purple, 195500-1350
88 13B Turbo, high square offset, 550cc, purple, 195500-1370
89-91 13B NA, high oval center, 460cc, red, 195500-2010
89-91 13B Turbo, high oval center, 550cc, purple, 195500-2020

jmike575

Thank you for the info. I have barrels of old harnesses off of everything I work on so its not to hard to change connectors. I did have s5 turbo injectors in it then. Back to the basics I guess.

jmike575

ok update on the car, replace injectors with known good ones then the car just would not start, put the old injectors in it still wont start hooked up smoke machine to check for vacuum leaks. none. fuel pressure is 40 in line and 70 with the gauge deadheaded to the pump. good spark good tps. good cas. good thermosensor. car flooding really bad, made sure only primaries are coming online during start. any ideas guys?

jmike575

Another thing is I changed my doors while the car was broke down do to a bad window and just cut the wires could that have something to do with it. And there is no radio in it either.

satch

iTrader: (1)

Have you checked the spark plugs to see if they are wet and if they are they need to be dried out (hair dryer). They might be too fouled though. Try unplugging the fuel pump and spray one to two seconds at most of starter fluid and see if the car will start for a brief period of time. If so, do this two times in total and then try to start the car w/everything hooked up.

jmike575

New plugs. I'm drying them out with a heat gun. I'll try to cut fuel and try the starting fluid thing. Funny thing is the car was running till I changed the injectors. Is it possible to do this if I got the primaries connected to the opposite connectors?

satch

iTrader: (1)

If the primaries were connected to the secondary injector plugs they would not work for the secondaries do not work in starting the car.

jmike575

I ment if the primaries connectors are swapped

satch

iTrader: (1)

And you can't replace high impedance injectors with lower impedance unless there was the presence of the resistor box found w/low impedance injectored motors or you chose to wire in resistors to each injector. Just finding a harness that fits the injectors would only be part of the fix.

jmike575

I'm way past that part I know its a high imp system. Maybe I just need to start a new thread.

satch

iTrader: (1)

So now you have high impedance installed? And you need to check the primaries to see if the injector plugs are switched. If the car was to start it would run a bit funky because fuel cut occurs to the rear primary injector at certain times. Not sure if this would cause a non start condition though.

jmike575

Yes high imp t2 injectors installed. Here is a list of mods.
China t45 turbo, 24x12x3 fmic, 3" intercooler piping, 40mm external wastegate, ratsnest removed, aluminum radiator, 4" exhaust with magnaflow 5x8 oval muffler, emanage ultimate (not installed yet waiting for greddy 3 bar map sensor hope it comes in friday) doors off of my first rx7 86 auto, aluminum hood from same car, alternator off 91 t2 cause i had one laying around with a dual belt pulley, electric fan with aftermarket thermo switch. all this on a s4 6 port engine in a 88 gxl with a n327 ecu

satch

iTrader: (1)

Have you tried the starter fluid trick yet? And the S5 alternator you are now using would be wired up differently than an S4 in case you weren't aware of that. If wired the same it would drain your battery and low voltage could prevent the ECU from working properly, but this is probably not your problem.

jmike575

I have full access to all wiring diagrams my family has a very sucessfull shop were we work on everything. I did follow the diagram on wiring my alternator. Another thing I forgot to mention is I dont have a omp system got rid of that with the ratsnest. My car is at the shop and I havent had a chance to get down there yet to try the starting fluid thing. I was thinking of just wiring up the emanage but i really wanted to get the car started again first.

jmike575

Im going to start this thread in the 2nd gen forum under turbo n/a wont start. Seems like a better place for it