Question about 1993 Chevrolet C/K 2500

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My 93 chevy 2500 diesel starts rough,worse when warm and sitting a few hours.6.5l

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The 93 model had a problem with the injection pumps not cranking when hot. They even extended the warranty out to 50,000 miles on them way back when. To test if the injection pump is bad. Take about a gallon of water and cool the pump off by slowly pouring it over the pump. Let it sit about a minute or two and then try cranking. If it cranks the injection pump is bad. Do not do this on a running pump or it can seize.

HotRod O--{oII] DieselPro

Posted on Jul 27, 2010

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