between 3500rpm and 4000rpm, engine sounds strained

1999 BMW 316
108,500 MILES
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NEILTHEHUNK
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Recently while driving ive noticed that in 5th gear, between 3500rpm and up past 4000rpm, my engine sounds strained as though its running dry and rough. Its rectifys itself once i slow down and keep below 3500rpm in all gears. Ive regularly checked oils and coolant and all seems fine. can you tell me what this could be a sign of?
Jun 12, 2012 at 6:31 PM
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MHPAUTOS
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High speed misfire maybe, have engine ignition system checked out first.
Jun 12, 2012 at 10:51 PM