MCHAM Posted September 7, 2011 Share Posted September 7, 2011 (edited) My 1992 RD690 with a 300 E7 temp is going crazy, I got water coming out of the weep hole on the water pump. The temp will shoot up to 220 then drop back down to 190. Gray smoke is coming out my stack, is was Black until this started going on. A trucker behind me said my truck is putting out some knockout fumes. Does anybody have a clue to what I got going on? Thanks. Edited September 7, 2011 by MCHAM Quote Link to comment https://www.bigmacktrucks.com/topic/20489-gray-smoke-strong-fumes/ Share on other sites More sharing options...
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