Could non premium gas cause cylinder misfires in a 2009 jaguar XF
I brought my car to my mechanic and code PO128 came up along with P0087 codes for cylinder misfires in cylinders 5,6 and 8. Also code P0316 formisfier on start-up (first 1000 revolutions). I was wondering what could cause the misfires. He speculated that it could be an issue with the coils also. Thanks!!