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Low Altitude

  1. Disconnect high altitude compensator hose harness at carburetor. Plug hose connections at carburetor and test drive vehicle. If HAC opens below 3900 ft. (1200 m) it causes a very lean mixture which can be felt as hesitation, surge or lack of power. HAC is temporarily eliminated from system by plugging connections.
  2. If performance improvement is noticed, inspect hose harness for proper routing and/or leakage. If there is no performance improvement, reconnect hose harness to carburetor. HAC is not cause of problem.
  3. If hose harness is not leaking and routing is correct, HAC must be replaced.
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