Thread: Rattle at high rpm
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  #12  
Old 05-18-2006, 01:06 PM
lkchris lkchris is offline
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Join Date: Jun 1999
Location: Albuquerque, NM USA
Posts: 1,947
Sounds like preignition to me.

OTOH, 4-cyl engines without balancer shaft usually have a "rough" period, but it will have been there since new.
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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
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