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Old 04-08-2009 | 04:39 PM
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opjose
 
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From: Poolesville, MD
Default RE: Tower .46 Engine Problem (knocking)

I usually run my Towers with 10-15% nitro and I have never heard any sound that sounds like "knocking".

I wonder if what you actually mean is a 4 stroke sound, which is typical if the engine is overly rich.