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What dnoes syste to lean mean - Cars & Trucks

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Usually the fuel system is not working correctly, or there's an air or vac leak. The engine is not getting enough fuel or too much air.

Posted on Feb 13, 2014


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Don't know what system lean bank means.

hi it means you have a lean fuel/air ratio on the cylinders on that side of your engine look for air leaks [hoses gaskets loose manifold bolts etc yates210456

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