pulling my hair out on this damn issue

[90hatchie]

its a s13 sr20 black top all stock setup
but it will ONLY run on 1 cyl and im seriously dumbfounded
i can have 2,3,4 injectors and 2,3,4 coil packs unplugged and it will start up but if i have 2,3,4 injectors and coilpacks plugged in and #1 out it wont even bother to hiccup
i switched the coilpacks around thinking 3 were blown out but that wasnt the case only cyl 1 will fire

i wanted to get a video of it but my brother stole my camera and took it to oklahoma

compression is spot on across all 4
wired up with fr sports diagram
im unsure what to do
i hate electronics with a burning passion

[Ceepo]

Swap the ecu, try it on a freinds car..., also check your wiring...

[90hatchie]

no one around here has a sr :-(
i tripple checked all my wiring
i wish i had a truck so i could tow the car down to 240sxmotoring have them look at it but im stuck here with nothing

[LayNLow]

So why are they not firing? No gas or no spark from 2/3/4?

[90hatchie]

all the injectors are good its just 2 3 4 arnt getting any spark
i was lookin at a few things today and i noticed my ignitor does get pretty warm
is their anyway to open up the ignitor to look at the connections inside it?

[2fast4y0u]

hmmm. possibly your coil pack harness? just a shot in the dark but check that to.
when you got your motorset, did it come from another running car or is this a new purchase from a company? check the CAS and make sure its timed correctly.

[g6civcx]

What year is the shell?

Check both ground terminals at the intake manifold.

Was the engine harness stock? What did you modify? Tell me exactly which wires you modded.

[90hatchie]

93 shell
i did every wire the frsport diagram told me to do
i checked every ground on the motor and their all good
i ecen scuffed em up a bit for better contact

SR20DET Swap Engine Harness Wiring Diagram Guide SR SR20 (http://www.frsport.com/SR20DET-Swap-Engine-Harness-Wiring-Diagram-Guide-SR-SR20_t_26.html) this is the wiring diagram i did

[steve shadows]

what is the ecu code on the side?

also make and year of SR?

Seems like ECU doesnt have all 4 drivers firing for Coil Packs for SR to me

[90hatchie]

its an e5
not sure what year the sr is its a black top
i was hoping you would have came in here

[2fast4y0u]

steve might be on to something...i have an e5 that the #4 cylinder injector doesnt work. switched to another ecu and BAM! no problems

[90hatchie]

DSCN2784.flv video by 160mph - Photobucket (http://smg.photobucket.com/albums/v284/160mph/?action=view&current=DSCN2784.flv)

as u see i start pulling plugs to injectors and coilpacks yet idle dosnt change at all

[RYAN_S-14]

id say try to swap the ignighter

[TheWolf]

You have alot going on here. You've found it's got compression so we've isolated it to spark or fuel. Some simple diagnostic procedures will help. You need to rule some things out. First off. Fuel. Install new plugs in all the holes. Start it up on one cylinder. Run for 30 seconds. Stop It. Pull the plugs. They should be wet and covered in gasoline. If the results are inconclusive then unplug the injector clips and try and start it up after spraying some starting fluid down the intake. If it picks up and runs on all 4 cylinders then it's a fuel injector driver issue. If it remains the same then it's a ignition issue. If you rotate the coils out on the #1 cylinder you can test if they're good. Once you've verified all injectors are working and all coils are working then I would start looking towards an ECU problem. It would be rather odd for an ignitor to run 1 pack but not the other 3. It normally will cause an intermittent issue that's random across them all.

[RYAN_S-14]

You have alot going on here. You've found it's got compression so we've isolated it to spark or fuel. Some simple diagnostic procedures will help. You need to rule some things out. First off. Fuel. Install new plugs in all the holes. Start it up on one cylinder. Run for 30 seconds. Stop It. Pull the plugs. They should be wet and covered in gasoline. If the results are inconclusive then unplug the injector clips and try and start it up after spraying some starting fluid down the intake. If it picks up and runs on all 4 cylinders then it's a fuel injector driver issue. If it remains the same then it's a ignition issue. If you rotate the coils out on the #1 cylinder you can test if they're good. Once you've verified all injectors are working and all coils are working then I would start looking towards an ECU problem. It would be rather odd for an ignitor to run 1 pack but not the other 3. It normally will cause an intermittent issue that's random across them all.

it sounds like a simple fix, but he is right^^^ try to eliminate things one at a time.