ok so today i get my 4 brand new injectors, put them in, plug everything back in and i notice coolant is shooting out of a ripped hose. i fixed that hose and now no coolant shoots i filled it up a little. now the real problem is my car wont idle at all if i give it gas and keep it near 2500rpm it doesnt stall anything under and it will stall, it sounds really really shitty i dont know how to explain its sound but it really doesnt sound good, sort of like sputtering. i tried to drive it just to get it home and i cant go faster than 10mph even redlining it in 1st im going 10mph. all the hoses and wires are hooked up correctly to my knowledge. i am thinking maybe i have to adjust the throttle position sensor but im new to cars and rotarys so i dont even know where that is or how to adjust it. any help will be appreciated because this is my daily driver and i need it to get to work.

 

oh yea its an 87 GXL

 

umm, that doesnt make anysence, unless your having a tranny/rear end problem

when you put in the injectors, did they seat right? the high idle could be due to an air leak around the injectors

-Jacob

 

vacuum leak and are you sure you got the right injectors???

 

the secondaries clicked in place and went in perfect, the primaries didnt click at all they just sat there and were kind of wobbly but the fuel rail still bolted down correctly so i assumed that was fine. even now that everything is back in place i can still sort of move them and spin them with my hands. can this be my problem? its defiantly not my tranny because before i started this my car idled, drove and ran perfect exept for the stumbling from dirty and wrong injectors.

 

i dont think they should be wobbly like that

 

how do i check for a vaccum leak? just spray starter fluid everywhere? how am i supposed to keep the car running and spray that stuff at the same time and if the motor revvs up i wont even notice because i have to keep my foot on the gas to keep it running

 

bump i really need to fix this tommorow so i can work or i will get fired.

 

get a friend to help you, try to keep it at the same rpm, spray the starter fluid and when you hit the leak, the engine will rev up

 

Did you get bigger injectors?

Check for spark, clogged fuel filter, stuff like that.

 

i was thinking it may be something along the lines of fouled plugs or something, fuel filter is brand new replaced last week, wires are new 7mm wires. injectors are OEM. im going to try and get new coil packs.

 

i bet you got the wrong impedence injectors. you could have gotten the ones for an S5. that could be your problem. wrong injectors can **** up your life.

 

i think its your fuel injectors
the same thing happened with me...there is a spacer between the primary fuel rail and the actual place where they bolt down...this little black spacer likes to dissapear at times..and when i fixed mine..it didnt wabble..stays perfectly still

 

i think its your fuel injectors
the same thing happened with me...there is a spacer between the primary fuel rail and the actual place where they bolt down...this little black spacer likes to dissapear at times..and when i fixed mine..it didnt wabble..stays perfectly still

 

oh yeah, i forgot about that spacer. i think he is right on that one. go out and check to see if you have the spacer in there (primaries and secondaries both)

 

hopefully i didnt but i specifically told the guy from marren fuel injectors "i have an 87 rx7 N/A and he said i have to find out if they are low ohm or high ohm" and i told him they are the low ohm 460cc injectors and he said oh ok i have them right here ill ship them out today. how can i tell if they are high or low impedence?

 

MORE HELP!

 

i believe you can tell the difference by the color of the plastic on top (where electric plug is) but i dont know which colors are which.

 

did you check the black spacer??
if its there..then try to fit the injectors a little better.

 

IF you have a multimeter, you can OHM the injectors to find out if they are high or low. If memory serves, low impedence will read 1-3 ohms. Highs are like 7 or higher. Also, did you figure out why you were only going 10 MPH in first at the redline?

You have an Auto or manual?

Rat

 

Sorry, not quite. The color if the injector denotes the CC or flow rate.

Rat

 

There is a spacer on the secondary rail in an N/A car? Thats news to me also.

Rat

 

Hes right. Basically anything under 5 is low, anything over should be hi.

The type of plug denotes high or low imp.

Ive never seen a spacer on one either.

 

the injectors are black with a baby blueish plug. its a 5 speed. im going to check the spacer today.

 

on s4 na,
there is a spacer for the primary rail,
but no spacer for the secondaries.

For injector info,
check:

http://www.rotaryresurrection.com/

under 'tech'

Hugues -