Faulty ignition system, advise needed urgently!!!

Kaizen Zungu

New member
Good day. I have a BMW e36 316i.
The issue I am dealing with us that only 3 out of the 4 spark plugs are firing. Like any rational thinking person, I changed the spark plugs, but the problem still persisted. I was able to test the ignition cables and I found that they are perfectly fine.
My coil pack on the other hand was suffering from drastic overheating, so I bought a brand new coil pack, but the problem of only having 3 spark plugs firing persisted.. What could be possibly wrong? Might I need to just buy a new computer for the car?
Because it also doesn't respond to any diagnostic tests.
This started a month after having put a new m43 engine on the car, which is the exact engine type the car uses.
Please help me out, this car is my baby, my love, my beastly e36.
 
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