Sudden loss of spark

[project1g]

So around noon I was cruisin' around about to help a friend go buy a motor for his GSX starin' down this boosted Nissan 240 and jammin' my air drums along with some All that remains when I go to give the car gas, and it did nothing.. After pushin' the car into an abandon restraunt parking lot I started to think it was the crank sensor so I got one of those on hold and got it, came back later to see what was up all it does is turn.. Now at the first try it turns over pretty strong, pull the key back and turn it again it sounds a little weaker.. Symptoms from when the crank sensor snapped on me before.. So I hack everything apart get hassled by the popo about why Im there and about 2 hours later using handtools a scisor jack and Jay racing timing belt tools which I must be retarded cause I can't seem to use them right I had re-timed my motor and put in a new Crank sensor.. Satisfied I took a drink and proceded to start my car.. So I though... Still turning over strong at first next try weak.. I got my buddy over there and we did the old fashioned spark check.. Nothin... I got absoloutely nothin out of it.. My Ignition control module plug has been known to come loose, but that usually in 3rd at 5-6k RPM.. Never at idle. But checked it to be on the safe side.. Still looked the same.. I'm wondering what would cause all 4 spark plugs to go out at once.. ICM? Ignition Coils? The wires are brand new and the plugs have around 3k on them.. The car still sits down town atm so any help would be greatly appreciated.
Dylan

 

[trevor425]

wrong forum dude, this is tuning and engine management.

anyways, sounds like you have lost power to the mpi circuit. does any of your acc's work? how bout the radio? does the check engine light come on for a sec, when in the on postion? i would start with the mpi fuseable link right on the batt positive side. check all the fuses and links first before tearing shlt apart, its faster and easier.

 

[project1g]

II have no fuseable link b my baterry all my access come on everything is normal minus my lack of spark

 

[trevor425]

what about the check engine light? it should light up breifly when you turn the key on. if it does, then get a meter and test the leads to your coil pack.

check for 12v switched (key on) and ground, and the signal wires while cranking. im not sure on the 2g wiring diagram, so i dont know what the wire colors are. you can find this info on vfaq most likely.

if those test good throw a noid light on one of the injector pig tails to see if its getting signal.

if the injectors aren't firing either you have an issue with the ecu, or the wiring to/from . you can rent the injector tester kit at auto zone maybe, if not they aren't to expensive, and are nice to have around.

good luck

 

[Indian]

Check your MPI fuse. I was in a similar situation,and it was only that fuse. I thought either coil pack or power transistor,but nope.