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Weird metallic sound....

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Old 04-20-2005, 07:23 PM
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Weird metallic sound....

Is it normal for the engine to make an "extra sound" around 6k rpm? Does something in the engine change, open, or close at this point of the engine's speed? When I get right around there this added sound sounds something like scraping or rattling. Anyone?
Old 04-20-2005, 07:42 PM
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I think the 3rd set of injectors open around 6750..
or I might be wrong about the 6750 figure.. maybe it is lower/closer to 6k
which might explain it.
Anyone ?

-B
Old 04-20-2005, 09:04 PM
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That sounds about right.
Old 04-20-2005, 11:51 PM
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You sure its not the Rotary-Ping sound you are hearing? It sounds like marbles in a coffee can. What grade of gas do you use?
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