Domore Posted January 2, 2017 Share Posted January 2, 2017 My 2005 Mack700 as been losing power/motor slowing down when plowing snow.Thought is might be starving for fuel, so one of my guys checked the primary filter and it was half full. Thought that was the problem so we changed the fuel filters. Same problem, checked the primary filter and it is still only half full of fuel. I would think the filter should be full. Open the bleed cocks while truck was running, but nothing come out. Don't understand how the motor runs with a 1/2 full filter. Truck will idle and rev fine in neutral. But will have no power under load. Truck has a automatic transmission. Thanks in advance... Quote Link to comment Share on other sites More sharing options...
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