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!!
P0128 = Coolant Temperature Below Thermostat Regulating Temperature P0087 is fuel pressure too low, and P0316 is a generic misfire code.....http://www.obd-codes.com/p0316......I think you should look into the other codes first before replacing the coils. Not sure how your mechanic is getting misfires in Cylinders 5, 6 and 8, he would have to be getting codes P0305, P0306 and P0308 as well.
It also showed those codes.
what grade of fuel is recommended by jaguar? if the manufacturer specifies a grade of fuel, you will have problems if you use a lower grade. unless you have a modified engine, there is usually no benefit to using a higher grade than recommended by the manufacturer.
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