Check Engine Light

[Grey]

Today after driving the R34 GT manual not pushing it very hard, after the ignition, the yellow check engine light symbol came up and stayed up on the dash. When I stopped the car about 3 minutes later, the car was vibrating quite a fair bit, so I went to check the exhaust, and it was making this sound "chug chug chug chug" blowing hot air out unsmoothly. No other sounds out of the ordinary were heard. After an hour I turned the car back on and thrashed it a little to see if the yellow light would come on again, but this time everything was normal and nothing weird happened. I checked the radiator and that was all normal, what could it be? Coilpacks? Plus, I don't have any diagnosing tools for my car.... This is the first time this has happened in the 1 and a half months since I've had the car.

[Moodles2]

Possibly went into "limp home mode", though the revs are usually limited to 2500rpm. It's possible the plug to the air flow meter is/had come loose.

[Grey]

burning smell and check engine light came on again, car was jerking pretty hard throughout the drive, my guess would be coilpacks

[tridentt150v]

Or water in your fuel?

[Grey]

definitely 1 cylinder is down, the car is just not putting out as much power