serial neva had that problem eva but thanks man will try, n keep u informed jsut want the thing to ring n purr

if you have a weak spark i could/would be a voltage drop across a wire or component. check you have 12 volts and not something like 10 or 11 volts at your coils. i found that the coils needed no less than 12 volts for my system to work, i found this out after loosing 1 volt over a relay which took weeks to realise that 1 volt can prevent it from working

UPDATE fully been lyin to u guys but not really, ended up usin a test light i have that weak of a spark n injector pulse the noide light couldnt pick it up, only a led test light could that weak it cant jump spark across the plug gap!! any ideas now im farken ova my datto

cas signal wire should be shielded.
may have been replaced with crap wire? and picking up noise
there are tests in the service manual for backprobing all this stuff

thanks lethal but yer its a manual ecu, i got everything from my mates 180sx except wiring harness!! got harness off some gay Fark on ebay..

might be another dumb suggestion but have you got a manual ecu or auto ecu?

Well at least you know the ecu is ok.

And you have tested the CAS so I would test continuity of the wires in the loom from the CAS to ECU. Even to the point of running new wires externally from the loom to prove the point.

Goodluck

okay long time no reply guys!! sorry bout that i sent my ecu off to injectronics at melbourne, for an inspection.. bad news for me is my ecu is fine. so leaves me reasons to believe there is a split in the crank angle sensor wiring somewhere, cause the sensor is fine itself, n i havent toughted that wiring dew to the fact it goes straitght to the ecu no by passin the plugs i had to make wiring for. if any ideas please share but will get bak to u guys after chrisy hopefully wid a great result have a good chrissy guys..

lol yer follow all procueders n all seems to me that its a faulty ecu! i dont have a spare to try n test!!

check continuity from earth side of inj to ecu plug
check ecu is pulsing an earth signal while cranking if not swap ecu
ecu wont pulse if cas is not telling it engine is turning. check ca signals
dropping resistor should be 6 ohms if det none if na
are you following diag proceedures in manual?
dazza