Could non premium gas cause cylinder misfires in a 2009 jaguar XF

Asked by Nov 19, 2013 at 03:56 PM about the Jaguar XF

Question type: Maintenance & Repair

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!!

3 Answers

293,325

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.

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It also showed those codes.

4,605

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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