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Old 10-03-2005, 10:22 AM   #19 (permalink)
mjannusch
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Join Date: Feb 2001
Location: Hudson, WI
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Default Re: Detonation vs. Pre-Ignition

Quote:
Originally Posted by Jimmy Nuetron
...it explains what happened to my dads snowmobile when he was runnin stock jets and our own homebrew ram air, there was aluminum all over the spark plugs..hmmm...
You may have hooked up your ram air and forgot to pressurize the float bowls from the airbox... Without doing that, the ram air pressure will tend to hold the fuel down in the bowl and not allow as much up through the jet/needle. Going a size or two higher on the main jet is probably a good idea anyways, at least until you determine that it runs too rich.
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