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      01-09-2010, 12:09 AM   #39
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Drives: 135i Coupe
Join Date: May 2005
Location: USA

Posts: 107
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2010 135i  [0.00]
Would a rough idle after sitting in the garage all night be considered a symptom of a future HPFP failure? To clarify, I do not experience long starts. My engine starts almost instantaneously.

I read that this is just a natural characteristic of the N54 engine, but I want to make sure.
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