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Unregistered
Join Date: Aug 2000
Location: a wretched hive of scum and villainy
Posts: 55,652
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If the problem is truly over-speed due to low load, then that is likely choked on the intake as suspected.
But what about the blower? if the blades are very dirty to the extent that it affects the airflow over them (think ice on airplane wing) then that could be the problem also.
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