Not sure I understand what you mean by a "motorcycle sound", but I would check the exhaust system for leaks.
If you did not add a fuel stabilizer to the fuel before storage, then the gas is bad for sure, and will cause varnish to form in the fuel system. So drain the gas, add a varnish remover (fuel system cleaner) to the gasoline. You may have to do this for several tanks to get the varnish out, which can cause injector problems and a host of other driveability problems.
Change the fuel filter also.
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Thursday, September 4th, 2008 AT 6:22 AM