so lots of progress, but still not working properly
still not got a working cylinder one :(
thanks to everyone for the advice (especially Jefftt and Jamie) now i'm after some more help before i give up and buy a 370z
i've fixed the intermittent cylinders 4 and 5 by cleaning all the green gunk of all the injector plugs and sockets (except no 6 that i couldnt get too) and pushing the plug firmly into the PTU. however still no cylinder one
i measured injector one and no resistance so bought a second hand one and replaced it
i checked the cylinder has no water in it and the maf and air filter are dry
i swapped coilpacks one and 3 and the fault stayed with cylinder one
i replaced the spark plug on cylinder one.
i checked the main plug is in the ecu firmly
i listened to the injectors with a screwdriver and injectors 2 to 6 give a clear sharp click, injector 1 gives a mufled indistinct nock. therefore i deduce injector 1 is not firing and assuming i've not been sold a duff one( it reads 12 ohms) i think i need to start testing the wiring loom
as i understand it the injecctors are fed straight from the ECU?
do both wires come from the ECU?
if so why two wires?
does anyone have a diagram/picture of which pins of the ECU ?
what sort of signal do the injectors get? (i am asuming a 12v low current pulse)
would i see anything using a multimeter, or do i need an osilascope, or is there a correct tool for the job?
while i'm checking the wiring loom:
i believe the coil packs are fed from the PTU?
why 3 wires?
do all 3 come from PTU?
what do the 3 wires do?
what is the correct test tool here?
thanks again to anyone who can shed some light / encourage me back to looking at it