need help just finished my sr swap and it wont start up

[shiversport]

just got every thing done i go to start it turns over getting gas but no fire what could be the problem anyone got info on what could be wrong thanks.

[Chezedik]

What does it do?

[shiversport]

turns over nothing happens no spark could it be ignitor?

[silverarrow27]

Possibilities: Wiring, ecu, or ignitor chip.

[Chezedik]

Could also be the CAS. Do you get any codes? Do you have a multimeter?

[shiversport]

changed the igniter now it starts but sounds like only one cylinder is firing going to look over the wiring to see whats up

[Chezedik]

If only one cyl was firing the car wouldn't run. Have you checked the coils?

[shiversport]

alright the first spark plug fires nothing for the rest i switched one with the other and it worked only on the first one that worked is it the ignitor or what could it be.

[Chezedik]

Wait, are you saying that you switched the plug from cyl to cyl or the coils? Are you getting any codes?

[shiversport]

switched coils around and the others worked but only for the first one

[corey240]

heres what you do to know if your getting spark, which means in my case and possibly yours, you may be flooding. take the fuse out for the fuel pump, then tryn and start it and give it a little gas, if it turns on it was turn off almost immediatly. so if it starts like this but not the other, then you are flooding the engine. also, you may already be flooded. dont ask me how to fix this because im still working on it. so if that doesnt work...

take out your spark plugs and unplug the cas and fuel pump fuse and try keep turning the ignition until you dont see anymore gas blowing out of the holes, good to have a buddy to help with watching that. then try and start it.

[shiversport]

im only getting spark on one cylinder and thats it the others are get nothing switched coils around still only firing on that one cylinder.and it does start up with just that one working shakes like a mutha f.......

[corey240]

id imagine, you however probly have flooded the rest of them because of this, empty them out the way i explained and check your oil, if it smells like gas reall bad change it

[masterteque]

This may sound like a dumb question but is your ecu plug bolted all the way in???

[FSUDrifter]

make sure your coil pack harness is grounded well. the ground comes out by the firewall. mine is connected where the stock catch can was.

[shiversport]

alright i checked the ecu and ground all good how do i check for codes on the ecu i havent had much experience with the s13 blacktop with j4 ecu. and on another thing when it stars the tack doesnt work i swiched it out with the dohc one to just to let you know.
Modified by shiversport at 3:58 PM 4/15/2007

[silverarrow27]

Is the black top motor a later model black top then or is it the early years? Could be the wrong ecu if the black top is an early model.

[shiversport]

how do you tell the difference from the two when i ordered it they told me it was an s13 so that is pretty much all i know is the j4 ecu early modle or late.

[shiversport]

ok i did some research and from what i read the j4 ecu is the type x or something well when i got my swap it didnt come with the harness only the ecu so i got them to send me one and im guessing its from a red top.so from what i read the wiring is different between the two is this correct if so what do i have to do to get it all right and running.

[Chezedik]

Good Luck!

[silverarrow27]

The only thing I would do if I were in your situation would to try to find the ecu pin chart of both and repin the ecu plug. Kind of hard not really knowing if the engine is actually a Kouki engine or not either. Have a friend with a redtop 62/63 or E5/E6 ecu that you can test with?

I couldn't tell the difference of either engine either if my life depended on it without major searching online for maybe the engine codes.

[shiversport]

right now im trying to decide to get a 62 ecu and try it to see if it will work I hate figuring out all the pin outs and what not and do you know if the j4 ecu came out of an older s13 or the newer one i cant find anything on it thanks.and do you know where i could get the pin outs just in case i need too do this and i hope i dont.

[silverarrow27]

J4 is out of the Kouki 180sx's(later models). Sorry I wouldn't know where to look for the pin outs either.

[dompower]

I got The same ****in trouble with my blacktop.My harness was E5 and my ECU J4.I solve it yesterday!!!The Answer?

Move pin #25 to pin #9Move pin #5 to pin #8Swap pins 2 and 3Move pin #11 to pin #10.

On E5; pin 25=Ehaust temp warning J4= Ignition Signal cylinder #4E5:pin 5= Empty J4= Ignition Signal cylinder #3E5 pin 2 = Ignition signal cylinder #2 J4= Tachometer signal output.E5 pin 3 = Tachometer Signal output E5= Ignition signal cylider #2E5:pin 11 = Empty J4= A/C relay

Chek it out ( this is for a J4 harness with E5 ECU so it's the inverse solution)

Note On J4 ECU there is no Exaust temperature sensor

Hope it will hep you!

[shiversport]

you are a life saver man i got it running about an hour ago runs great now all i got to do is get my exhaust finished and relocate my battery and ill be set thanks allot guys you've all been a great help.

[dompower]

Man

you are a life saver man i got it running about an hour ago runs great now all i got to do is get my exhaust finished and relocate my battery and ill be set thanks allot guys you've all been a great help.

Man, I'm so happy to help you! (on my first post hihi) Because, if I help you it's because I just found the solution to my problem!!!! Hope it will help someone else, because I found no solution on the net for us problem... I'm so glad!

Enjoy Dude! I'm enjoying too

DompowerLe Français!

[silverarrow27]

Congratulations and this post should be added into the sr20 faq sticky!

[shiversport]

well got my exhaust sounds great still have some small problems hesitates a little around 3000 rpm then goes and also gets a little back fire when letting off the gas when in gear figure it sooner or later i hope.