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Subject:RPM surge
From:Gilles H Turmel
Date:Thu, 16 Jun 2011 03:57:27 -0400

A friend of mine has an 86 Westy with a new 2.1 block rebored to 2.2.  When driving with engine at op temp RPM surges to 2200 RPM. We check to find vacuum leaks: no leaks found. Idle controller has been change for a used unit. At idle the engine is rough but not running rich.  Good power on higway.  Any ideas?
Best regards.
Gilles Turmel

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