Randy mckinney Posted July 28, 2014 Share Posted July 28, 2014 Low mile mack rebuild truck sat about 6 months took her out today try try the tranny fix and its blowin brownish smoke out breather after i shut her down oil is driping from breather tube. Any ideas what could cause this? Quote Link to comment https://www.bigmacktrucks.com/topic/36491-85-350-blowing-smoke/ Share on other sites More sharing options...
gearhead204 Posted July 29, 2014 Share Posted July 29, 2014 did the draft tube get plugged? wasp nest or such? I take it the eng. performs correctly just a smokey draft tube. Quote Link to comment https://www.bigmacktrucks.com/topic/36491-85-350-blowing-smoke/#findComment-254351 Share on other sites More sharing options...
Randy mckinney Posted July 29, 2014 Author Share Posted July 29, 2014 Yes the truck runs good just smokey. Quote Link to comment https://www.bigmacktrucks.com/topic/36491-85-350-blowing-smoke/#findComment-254431 Share on other sites More sharing options...
gearhead204 Posted July 30, 2014 Share Posted July 30, 2014 hey randy I'm putting 2 and 2 together might have come up with 4 how sorry is the air compressor? this is the truck with the dirty air system right? does the discharge from the draft tube change when the compressor unloads? Quote Link to comment https://www.bigmacktrucks.com/topic/36491-85-350-blowing-smoke/#findComment-254442 Share on other sites More sharing options...
Randy mckinney Posted July 30, 2014 Author Share Posted July 30, 2014 Yes this is the dirty air truck comp. is slow building at idle. Didnt notice if it changes when unloading it seem to come an go some. Quote Link to comment https://www.bigmacktrucks.com/topic/36491-85-350-blowing-smoke/#findComment-254448 Share on other sites More sharing options...
gearhead204 Posted July 30, 2014 Share Posted July 30, 2014 the other things that cause crank case smoke that I can think of would have made themselves evident by now.(spun brgs.) or injector coming loose. Quote Link to comment https://www.bigmacktrucks.com/topic/36491-85-350-blowing-smoke/#findComment-254450 Share on other sites More sharing options...
theakerstwo Posted July 30, 2014 Share Posted July 30, 2014 Steam and smoke gets mixed up sometims and steam is coolant in the oil. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/36491-85-350-blowing-smoke/#findComment-254454 Share on other sites More sharing options...
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