Car is only a 4 cylinder. Help!

[M_ryder15]

Car is a 1990 Nissan 300ZX 2+2. Been sitting for about 3 years, before I bought it. Slowly fixing it, but recently been misfiring. 2 cylinders aren't working, and cannot figure out what it is. Check the spark plug (which I replace all of them a couple months ago) and look fine. Checked if there was power to the plugs, and it seems like every other plug, they're getting power. Changed the ignition coils, and still nothing. I'm still new to all of this, so any help would be appreciated. Thanks in advance

[ca18det_boy]

Try swapping coils to see if the problem follows. If the problem stays the same on the applicable cylinders, you're most likely looking at a break in the signal wire or the ECU isn't sending the right info.

[M_ryder15]

Try swapping coils to see if the problem follows. If the problem stays the same on the applicable cylinders, you're most likely looking at a break in the signal wire or the ECU isn't sending the right info.

Will try. Thank you

[NolimitZ32]

Spark, Fuel, Compression. Confirm that you have each of the three, once you find whats missing go from there. Check the FSM in the link in my signature.

[zxFarside]

Does it sound like a subaru?

[echonightsi]

Vague, how many miles does it have on it? You still havent touched the injectors, which go bad over time.