KA24DE Problem-Wont Spark

new_to_drift · 10-11-2005, 02:57 PM

hi i just swapped in a KA24DE motor out of a 97' 240sx into my 89 240sx coupe.Everything is hooked up, and for some reason it will not spark,it cranks over just wont spark so it obviously will not start.I think it may be the distributor or a bad ecu.I was wondering how i could check these things to find out what the real problem is so i can get it fixed.Thanks a lot.

banged240_drift · 10-12-2005, 12:05 AM

oh man i had the same problem, mine wouldnt start due to the wiring, going into the ecu, i took it to a shop for that though cause i suck with wiring

where did you get the info on the swap? zilvia.net has a writeup on it that i used, you should check that out first, cause theres alot of things that could be wrong, so i dont want to type out all the questions cause ill probably forget a few so check out zilvia.net and see if that helps if anything comes up and you still need help ill see what i can give ya

DomLee · 10-15-2005, 11:15 PM

There are a few problems. You own a early S13. These used a SOHC motor. The latter S13s and S14s used a DOHC motor.

But the bigger problem is that you're using a S14 motor, one that has OBD II. Your car, has OBD I.

The harnesses are not compatible. THe ecus are not compatible. The smog equipment is not compatible.

I've since sold my 240sx a good number of years ago. I don't know if anyone has successfully done the swap that you are trying to do. But if someone has, you can be sure that it will be expensive.

HoosierDrifter · 10-16-2005, 09:46 AM

you have to get the ka24de s13 coil and distributor

new_to_drift · 10-16-2005, 06:26 PM

You guys must think im retarded or something.I have the ecu to match.I have the harness adapted to mine,and it all matches up.And i have the right distributor and coil.But it started finally,i think something might be up with my TPS cause it randomly revs quite often.Like every 5 or 6 seconds.

brainfood · 10-16-2005, 09:48 PM

in the factory service manual there is a couple of steps on how to check the distributor with a mutlitester. I just replaced my distributor because of no spark in my '95 sucks that the coil and distributor are one piece. Also check ka-t.org under tech to make sure it is clocked and installed correctly. my rotor was wrong and I didnt realize and my car was firing when the rotor was about 10 degrees before the pin and it had to arc like crazy to fire and it was running like *Censored**Censored**Censored**Censored* till I reclocked the distributor and replaced the rotor with the correct one.

10-11-2005, 02:57 PM	#1
new_to_drift another 240 owner Join Date: Jun 2004 Location: Novi,Michigan Posts: 244	KA24DE Problem-Wont Spark hi i just swapped in a KA24DE motor out of a 97' 240sx into my 89 240sx coupe.Everything is hooked up, and for some reason it will not spark,it cranks over just wont spark so it obviously will not start.I think it may be the distributor or a bad ecu.I was wondering how i could check these things to find out what the real problem is so i can get it fixed.Thanks a lot.

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10-12-2005, 12:05 AM	#2
banged240_drift Registered User Join Date: Nov 2003 Location: dallas/ft.worth Posts: 260	oh man i had the same problem, mine wouldnt start due to the wiring, going into the ecu, i took it to a shop for that though cause i suck with wiring where did you get the info on the swap? zilvia.net has a writeup on it that i used, you should check that out first, cause theres alot of things that could be wrong, so i dont want to type out all the questions cause ill probably forget a few so check out zilvia.net and see if that helps if anything comes up and you still need help ill see what i can give ya

10-15-2005, 11:15 PM	#3
DomLee Registered User Join Date: Jul 2003 Location: Redondo Beach, CA Posts: 209	There are a few problems. You own a early S13. These used a SOHC motor. The latter S13s and S14s used a DOHC motor. But the bigger problem is that you're using a S14 motor, one that has OBD II. Your car, has OBD I. The harnesses are not compatible. THe ecus are not compatible. The smog equipment is not compatible. I've since sold my 240sx a good number of years ago. I don't know if anyone has successfully done the swap that you are trying to do. But if someone has, you can be sure that it will be expensive.

10-16-2005, 09:46 AM	#4
HoosierDrifter Registered User Join Date: Jan 2005 Posts: 369	you have to get the ka24de s13 coil and distributor

10-16-2005, 06:26 PM	#5
new_to_drift another 240 owner Join Date: Jun 2004 Location: Novi,Michigan Posts: 244	You guys must think im retarded or something.I have the ecu to match.I have the harness adapted to mine,and it all matches up.And i have the right distributor and coil.But it started finally,i think something might be up with my TPS cause it randomly revs quite often.Like every 5 or 6 seconds.

10-16-2005, 09:48 PM	#6
brainfood Registered User Join Date: Jun 2004 Location: Orange County, CA Posts: 667	in the factory service manual there is a couple of steps on how to check the distributor with a mutlitester. I just replaced my distributor because of no spark in my '95 sucks that the coil and distributor are one piece. Also check ka-t.org under tech to make sure it is clocked and installed correctly. my rotor was wrong and I didnt realize and my car was firing when the rotor was about 10 degrees before the pin and it had to arc like crazy to fire and it was running like CensoredCensoredCensoredCensored till I reclocked the distributor and replaced the rotor with the correct one.