Vapor is not smoke, any more than those things up in the sky are smoke clouds
Even those contrails behind hi-flying jet aircraft are vapor, not smoke
Correct: black smoke at any throttle, and especially under full throttle, is too much fuel with too little oxygen from filthy air filter, or some dip-stick cranked the Injection Pump up more than recommended because more is better..............
White vapor with odor of raw fuel is UNBURNED Diesel fuel, where combustion temperature was too low to ignite all fuel in the cylinder, hot but un-ignited fuel vapors passing out the exhaust system
White vapor with odor of engine coolant is leakage into exhaust system past exhaust valve, hot but unburned
Black smoke with odor of burned diesel fuel is UN-COMBUSTED Diesel fuel where fuel was at combustion temperature but all oxygen was consumed, fire went out, hot carbonized Diesel fuel passed out into the exhaust system as soot
Grayish smoke with something very nasty over odor of burned Diesel fuel is where engine coolant is leaking into cylinder or around exhaust valve, and coolant was exposed to combustion temperature, possibly also reducing combustion temperature, resulting in grayish smoke
Raw oil in the intake results in UNBURNED-but-carbonized oil, which then blows out the exhaust system as black smoke\soot
Some of these results can be easily-observed while using starter-fluid when trying to get your charcoal briquettes up-and-glowing (starter-fluid is fuel) - white vapor: too much fuel, too little glow - black smoke: lotsa glow, too much fuel - white vapor with odor of beer................ - white vapor with odor of engine coolant: you drunkenly grabbed the bottle of anti-freeze by misteak............. - white vapor with odor of urine...............
Know your subject.........................
_________________ '05 CRD Limited Pricol EGT, Boost GDE Hot '11; EDGE Trail switched SEGR; Provent; Magnaflow; Suncoast T\C, Transgo Tow'n'Go switch; Cummins LP module, Fleetguard filter, Filterminder 2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers Rubicons, 2.55 Goodyears Four in a row really makes it go
Last edited by gmctd on Mon Dec 01, 2014 3:16 pm, edited 2 times in total.
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