new to forum.. 2011 mini rough idle, misfiring post... yes again
#1
new to forum.. 2011 mini rough idle, misfiring post... yes again
Hey all so I'm new here but not to the car world and forums. I have read through many many threads already and I suspect the problem is the HPFP...
but any way so my GFs car is a 2011 Cooper S and she is getting the common misfiring/rough idle symptoms. I have already replaced the plugs and ignition coils and I just did the dreaded walnut blasting of the carbon build up(which wasn't too bad actually lol)... but to no avail it is still having the issue.. any input on this or is the HPFP the next logical step?
Thanks, Jason
but any way so my GFs car is a 2011 Cooper S and she is getting the common misfiring/rough idle symptoms. I have already replaced the plugs and ignition coils and I just did the dreaded walnut blasting of the carbon build up(which wasn't too bad actually lol)... but to no avail it is still having the issue.. any input on this or is the HPFP the next logical step?
Thanks, Jason
#3
Get the car hooked up to a proper scan tool, and don't keep throwing parts at the car.
Failing HPFP's are being covered out to 120k miles (on 07-09 cars) under dealer warranty, so a dealer visit may not be too bad of an idea for a free pump that would otherwise cost you around $600.
Failing HPFP's are being covered out to 120k miles (on 07-09 cars) under dealer warranty, so a dealer visit may not be too bad of an idea for a free pump that would otherwise cost you around $600.
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Last edited by nkfry; 03-10-2015 at 03:39 PM. Reason: Missed vehicle year.
#4
#5
https://www.northamericanmotoring.co...-for-hpfp.html
And if they disagree with you that the root cause is HPFP, you will be out of 1 hour of labor and then need to take your car to a competent independent to deal with the underlying problems.
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#6
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My 2011 MCS HPFP was covered under remaining factory warranty, only days before it expired. Not sure if it was extended for the N18. Seems to be a LOT of HPFP issues lately, even on the N18 engine. Carbon walnut blasting on an N18? I thought that the N18 was not going to have the N14's carbon buildup issues?
#7
Get the car hooked up to a proper scan tool, and don't keep throwing parts at the car.
Failing HPFP's are being covered out to 120k miles (on 07-09 cars) under dealer warranty, so a dealer visit may not be too bad of an idea for a free pump that would otherwise cost you around $600.
Failing HPFP's are being covered out to 120k miles (on 07-09 cars) under dealer warranty, so a dealer visit may not be too bad of an idea for a free pump that would otherwise cost you around $600.
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#8
N18 may have partially mitigated the severity with redesigned crankcase ventilation, but the underlying problem of no fuel splashing over/cleaning intake valves is still there.
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