missing on cylinder

[240drfter]

missing on first cylinder. swapped coil packs between cylinders doesn't change. compression tested first two. both 120 ( i didn't know what it was suppose to be) pulled out injector powered it and it opens and closes also it soaks plug down but when coil out it sparks( and i swapped em and it does same thing.)just blows the fuel through the cylinder(nice flames, but bad)

apexi controller stopped displaying rmps. it does it randomly im going to check the wire in a little bit but if its still good what sends rpm signal to ecu...(cas?)

just wondering if anybody has any ideas. ill post up some more info if you need it

[240drfter]

checked injectors and coils power today both have 10-10.5 volts at idle......is that normal im about totally stumped now...battery has 14 volts...what other factors could make it miss on only one cylinder

[240z4u]

Just because you have spark outside the cyl. doesn't mean its strong enough inside. Do you have an ignitor??

Evan

[240drfter]

no i dont have extra..do you know what the voltage is suppose to be..i dont think the coil is bad because its fine in the other cylinder(when i swap them)..does anybody have an fsm they can email me or something

[virus77]

leaky injector? bad injector seal? try swapping injectors and see if the problem moves to the next cylinder or try new orings maybe

Heres a link to the FSM

http://www.nicoclub.com/FSM/rb/

[240drfter]

just swapped injectors and still stays on same cylinder...gotta go to school now so i guess tomorrow ill try taking closer look at coils cause theres a clicking noise like spark coming from the front of engine somwhere ....if anybody has any other things that i could check please let me know thanks

[240drfter]

installed new ignitor same thing. could it still be a coil pack even though i swapped them in between cylinders and it didn't move with it

[Nissan2367]

If it stayed with the same cylinder and you moved the packs i would say no. Have you checked all you injector wiring and coil wiring? Maybe you have a short.

[Grim_Fandango]

isnt 120 a liltle low? i have at least 150 on al of mine.

[240drfter]

bump. went out checked it all over again 150psi on cylinders,injectors 12v, coil packs 12v, coil sparks injector fires.......could the cas separate the time that the injector fires from the spark cause it still soaks plug so i know its firing, but i was wondering if it could be firing at wrong time. also is there anything i can get to check voltage of spark. trying to get this solved before big turbo upgrade.