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Conversion Finally Done, But Wont Start :(

vitz_n1

By vitz_n1,
in Engines & Forced Induction

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vitz_n1 Community Regular

vitz_n1

Posted
Posted

Hey guys n girls,

I have ANOTHER question about a r32 rb25 conversion.

I have been reading around a lot on this and finally finished the conversion myself which was quite rewarding.... until i tried starting it.

For some reason it wont start nor even think about starting.

There is def fuel getting through as it STINKS of fuel and i pulled the hose off to check and its pumping fine.

I'm pretty certain its not getting an spark, i dont have a timing light to test it with so i just pulled the plug out and turned it over just hanging the spark plug in the coil, and no spark.

I've been readin through the workshop manual and tested the harness and coilpacks. The test in the manual for the igniter was a little confusing but im pretty sure its ok.

Im starting to lean towards something ive done wrong wiring up the RB25 (im using RB25 loom as well) but everything seems to be working fine i.e. fuel pump, eccs and ignition relay.

Any help is appreciated.

Ryan

Skyline32GTST Apprentice

Skyline32GTST

Posted
Posted

not 100% sure and i dont want to waste your time either, but when you say not starting do you mean, no cranking, no compression, is the engine turning over?

you say you are using rb25 engine and loom, what about the computer?

double checked all electrical connections? and not by looking but by feeling them?

is the engine used in the conversion new/secondhand/rebuilt? condition of engine, block and head?

hope this gives you some kind of idea, or even helps you.

cheers.

vitz_n1 Community Regular

vitz_n1

Posted
  • Author
Posted

thanks for the reply.

the motor cranks fine. i tested most of the sensors and they all checked out ok.

the motor itself has gone rings in cylinder 2, dodgey f**k i bought it off sold it to me as working motor :S i have another block i am building but want to get this ironed out and started so when the bottom end is ready it can just be swapped over.

SECURITY Grand Master

SECURITY

Posted
Posted

rip off the CAS and spin it by hand while testing the spark plug for spark (holding it near an earth), if it doesnt spark then look into replacing the CAS. try swap with someone who you know has a working one.

BHDave Grand Master

BHDave

Posted
Posted

I know you've said you've tested the relay, but have you checked that there's power at the coil when the ignition is on?

The spark plug needs to be earthed to spark, so if the thread isn't resting on something that is earthed it won't do anything.

vitz_n1 Community Regular

vitz_n1

Posted
  • Author
Posted

Awesome!! She's running. I found a plug i hadn't connected (the one that kind of bridges across the ignitor.....kinda :S)

Anyway, after a week of fkn around, thats all it was. How dumb could you be :8...... at least i know EVERY sensor and harness in my car is ok LOL!!!

Thanks heaps for ya help guys!!

Ryan

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