If it's not the vss it sounds like it running low on fuel what does your vacuum gauge on the fuel system say, ?I had a similar problem and found the check valve in front of my primary filter was plugged, someone had put pieces of paper in the fuel tank. This can also cause you to drain 1 tank while leaving the other full. tom
2010 t800 losing power
Discussion in 'Kenworth Forum' started by doops22, Jan 19, 2012.
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