Quote:
Originally Posted by quick
If I don't have to take it to the nearest dealer (75 miles- lose at least 1/2 a day of work), that would be awesome
Have a lift at home and a good mechanic but do need to give him the pointers though
2Stock 2012 X5M with 41,000 miles...
About 2 months ago, got a misfire issue, dealer diagnosed misfire Cyl 1 & 3 and suggested we change the plugs
Brought the car back, ordered OE Bosch plugs and changed them all
Misfired again and this time Cyl 1, 2 and 3
Changed the coils with Elgar and it misfired cyl 3
Swapped coil 3 with 2 and the misfired stayed at 3
Replaced the plug in 3 and yet another misfire but this time Cyl 1
so I haven't changed the plug yet but what do you all think, what the heck is going on here?
I am about to throw in the towel and just take it to the dealer to just get over the dang issue?
Am I having a vacuum leak here?
Thanks
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Check the bolts on the valve cover that hold down the coil/injector wiring harness on that side of the engine, they are grounding points and need to be tight. Check the CCV tubes that runs to the lower intake manifold on that side. It could be cracked which is very common. Run ISTA or grab and app like torque and a OB2 adapter to monitor your fuel rail pressure for that side, possible HPFP issue.