deathb4dishonor
01-03-2017, 06:03 PM
I usually never post cause I like to do a lot of research and fix things before they ever become a real problem but this is not the case. I recently bought a s14 kouki with a s14 blacktop sr20det swapped in. The motor has got me stumped and I'm at the end of the line with this one. So motor runs rough, misfires and has no power in and out of boost. I already compression tested and replaced TCS, spark plugs and battery, redid the grounding straps and tested every sensor and harness in the engine bay. The first and second cylinders are definitely the problem, I found that out with my consult and Nissan data scan(full version) that cutting off first and second cylinder make no difference and that this entire time iv been running off of 2 cylinders number 3 and 4. I confirmed by power test, removing each coil pack no change except for cylinder 3 and 4. Same with injectors pulling 1&2 no chang.
The thing that doesn't make sense is I have fuel, spark and good compression. All 4 coil packs test good and iv swapped them with no difference. I tested the cas, injectors and ignitor all tested good according to FSM. Redid my timing iaw fsm. All wiring including coil pack, injector and ECU harnesses and they all test good. I am really stumped and don't see how this is even possible. The only thing I can think of is the ECU is bad, but I have no ecu fault codes (55) and I have no problem communicating with consult and NDS software.
Please if anyone has come across this problem if they could share some incite I'm drowning here thanks in advance.
The thing that doesn't make sense is I have fuel, spark and good compression. All 4 coil packs test good and iv swapped them with no difference. I tested the cas, injectors and ignitor all tested good according to FSM. Redid my timing iaw fsm. All wiring including coil pack, injector and ECU harnesses and they all test good. I am really stumped and don't see how this is even possible. The only thing I can think of is the ECU is bad, but I have no ecu fault codes (55) and I have no problem communicating with consult and NDS software.
Please if anyone has come across this problem if they could share some incite I'm drowning here thanks in advance.