Hi
So I started the Z after work today and if felt a bit lumpy on idle. When I got out of the car park and took the car up to speed it got worse and the check engine light started flashing.
I pulled over and plugged in my obd2 reader and I got the codes P0302 & P0300 (aswell as the usual P0420 & P0430 as I have high flow cats)
I understand P0302 & P0300 are misfire in cylinder 2 and a general random misfire.
So where do I got from here? My first thoughts are to check the plugs and the coil packs but after that I'm not sure. . .
Bit about the car: 04 UK ,72k ,had the spark plugs done approx a year ago, high flow cats and stainless cat back, plenum spacer , momentum performance cold air intake.
All help and guidance will be much appreciated
Tom.