Problem With S13 + Rb20 Conversion No Spark

[cabramatta]

Hey guys got a quick question.

Recently put an RB20DET into my S13, did a wire tuck while I was at it and put the battery into the boot.

Now the problem is that when I turn on the ignition, the fuel pump doesn't prime. So what I did was hardwire the YELLOW/BLACK cable from the fuel pumps plug which is the 12v wire, straight to the battery. When I do this, the fuel pump primes but doesn't prime for only a few seconds.. It just keeps going.

With this being done, I went to start the car and it only kicks over but doesn't start. The fuel lines are getting fuel and pressure (I can hear/feel the fuel pushing through the lines into the rail).

What I'm stuck at is that the car isn't getting any spark. Everything is grounded properly and the cluster/stereo etc works, same as the headlights and what not.

The 2 green relays next to the ECU also click when I turn it to ignition.

I am yet to try a different CAS/IGNITOR but could these cause this ? The ignitor is getting power (tested with a multimeter) and so is all the coilpacks but the damn thing just don't turn on!

Sorry for the essay.

Any help will be greatly appreciated as this is driving me nuts.

[markdem]

if you want to check the ignitor, find a big transistor that can handle a lot of abuse (about $3 from jaycar) and make your own single cylinder ignitor. you can find the schematic online but if you need a hand ill scribble something up. dont spose your on the gold coast?

[cabramatta]

Hey mate, nah I'm in Sydney.

If you could draw something up like a guide that would be great mate!

Thanks heaps!

[markdem]

you will need the biggest NPN transistor you can find that needs no more than 1V to switch on. NPN's switch on when power is applied unlike PNP which switch off when power is applied.

this circuit is only good for testing. you cannot run your car properly with it but it is enough to give a spark on the spark plugs

not all transistors are laid out the same way. what i mean is that the EBC (Emitter, Base, Collector) may switch places. eg: BCE

also, you can connect the transistors base and collector to any pins 1-6, as long as the base is connected to the ECU side of things and the collector is on the coil side of things. i just happened to use pin number 6 as an example

Edited November 10, 2011 by markdem

[cabramatta]

Excellent.

Thanks for the help mate, I will give it a try and see how I go!

[UNDR8D MOTOWORX]

umm bro...forget all that lol

jus run a wire from IGN trigger on the body plug near the front left headlight to the coil pack loom n BOOM u got spark LOL happened to me too easy fix

and also u gotta hook up fuel pump trigger from the same plug thats why ur pump is not turning off

[markdem]

you probably ended up sending power INTO the ecu

[cabramatta]

ECU was rooted from the start.

Got a different one everything worked out fine.

Thanks alot Markdem

[markdem]

shit man thats a good find! well done for sticking at it