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Air filter at 16k miles
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03-02-2020, 07:23 PM
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JK-M5
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Drives: MBB F90 M5
Join Date: Jan 2016
Location: United Kingdon
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#your PCV valve could be blocked also.
#worn piston rings.
# clogged oil passages due to dirty oil.when was the oil changed and is the correct amount in it ( Not over filled)
just a few things to check.
is the car tuned
Appreciate
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JK-M5
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