injectors not working while cranking
 

Hey


Well in test mode, the injectors fire along w/ coils etc. However when in normal mode, they dont fire the injectors but the coils work still. Also i notice that when in test mode it shows the timing/rpm/injector pulse , yet when i crank normally none of this works.
I've been reading through a bunch of old threads but still nothing

you havent got the primarys and secondarys wired back to front?? the wiring to the cas is right??

All the wiring seems good. However i have discovered that it seems my acutal injectors are not working. I tested the injector wires w/ one of those node testers (you plug it in where the injector should be and it will flash whenever the injector was supposed to be fired)
Either i dont have enough fuel pressure to open the injectors, OR they are stuck closed(which is quite possible as they were cleaned after been clogged but never used, and i was told if i let them sit they may stick again)
I'll know for sure tommmrow once i get them cleaned again.

i have the same problem
the engine cranks but no injector impulse
at how much do i need to have the fuel pressure at????
do the injectors axually need a specific pressure to open???
i have it set around 35-38 psi???


I'am using 4 1600cc injectors

you shouldn't need ANY fuel pressure to open or close the injectors.

i usually test suspect injectors with a 9volt battery. i give it a couple of little taps on the terminals and listen for clicking and watch the pintle move.

Ray

is your power source for the injectors the same as your coils, or two diff power sources?
Ive seen some people use a power source that provides power when ign is "on" but not when cranking. Just an idea.

Acutally what ended up happening was a combination of things.... My injectors were firing, BUT they were clogged due to sitting for a long period, so once they were cleaned, no issues. As for my spark, The problem was that my switched 12V would turn off during cranking so i had to take it from somewhere else.