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International Automotive Technicians Network
Re: derate and smoke
Posted to HD/Fleet Forum on 3/29/2018

White smoke. Derate. Now,what do those clues tell you?

If you can't duplicate the problem in the shop,time for a long road test WITH the driver. Make sure all fluid levels are correct and pressure test the cooling system while hot. Do a jiggle test on all th... Login to read more.