So I have a JDM k24a into a ek hatch

my problem is that my engine is misfiring and it sound like a Subaru engine

first it was a stuck open injector so I swapped it out and put a new one in , then when I turned it on it threw out white smoke I’m assuming the extra gas after that I changed the spark plugs and check the engine and I notice that cylinder 1 nothing happens when I unplug the coil pack any ideas check spark has spark checked for gas has gas checked compression on all 4 cylinders and all cylinders came out 160 all across , I need help anyone ?

 

First of all congrats on having compression across all cylinders, should be a simple fix.

If unplugging #1 coil results in no change to the engine running try the following only moving onto the next step if nothing changes.

1. swap coils 1 & 2, if the problem follows the coil its a bad coil pack
2. swap injector 1 & 2 if the problem follows the injector its the injector
3. Check wiring for injector (12v power and pulsed signal from ECU)
4. Check wiring for coil (12v, ground and pulsed signal form ECU)

 

I have a k tunes full rail so I took injectors and rail off while still attached and primed the car and fuel was spitting out as normal , all 4 injectors where firing , I swapped coils all around and still no difference cylinder 1 don’t do a difference when disconnected how would I check wiring ? That’s my last option right ?

 

If you already did:
-compression test = OK all cylinders
-swapped coils = problem did not move/change with coils
-confirmed injectors are ok (just watching them spray fuel is not quite enough IMO, your eye will not see if there is a difference in flow from 1 injector that could be causing the issue.)

ENGINE OFF: Pull dead cylinders coil out of the engine and put a spark plug in it, rest it on the valve cover.

While the coil/plug is resting there DO NOT TOUCH IT or the engine and have someone crank over/start the engine. If you see a spark arcing on the plug the wiring is fine. If you don't see a spark then you will have to check the wiring.
K series coils are 3 wire: 12v switch power, ground and signal from ECU. If any 1 of the 3 has a short the coil will not fire. Test for 12v, ground and then signal from ECU.