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Uh oh... Lots of smoke

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April 8, 2012 - 10:29am
fyoung5
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Ok, so I have been running my 300d on veg pretty successfully for about 500 miles. Now the engine idles really rough (it never purred like a kitten but this is REALLY rough!) and the exhaust spews huge amounts of white smoke. This happens on diesel, I have been afraid to run veg until I figure out the smoky exhaust and really rough idle. Thoughts?

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April 8, 2012 - 1:44pm
#1
BrianMiller
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sounds like air to me. tighten all clamps and filters

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April 8, 2012 - 5:24pm
#2
fyoung5
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An air leak on the diesel side? I tightened everything and it still is there. Why would air cause loads of smoke?

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April 8, 2012 - 5:40pm
#3
veggpwr
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Now the engine idles really rough (it never purred like a kitten but this is REALLY rough!) and the exhaust spews huge amounts of white smoke. This happens on diesel
Does this happen in the morning when you starts in diesel?
Does the white smoke clear out and the engine smooth out later?
Does you purge long enough the night before shut down?
Does your glow plugs working properly?
Are you sure you starts in diesel? (Proper operation of valve A and B)

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'05 Cummins CTD 24V HPCR RAM 2500 QC SLT SB Black 4X4 48RE  325 hp  610 ft.lbs
GC Kit  + 3rd Tank WVO(80%)/RUG(20%)  +  Co-Pilot 
3-Tank Operation managed by Co-Pilot: Blending(warm up) / Veggie(hot run) / Diesel(purge for next start)
Smarty Jr  40/70/100 hp (Timing Map Modification)
 

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April 8, 2012 - 8:16pm
#4
BrianMiller
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Black smoke=fuel
blue smoke= oil
white smoke=air
which do you have?

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April 9, 2012 - 9:31am
#5
KirkH
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Doesn't water in the fuel (such as coolant) also cause white smoke?

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April 9, 2012 - 4:37pm
#6
BrianMiller
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yes.. but those three above are the most common. and when it is someone new to grease it is most likely air or a clogged filter(dirty grease)

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April 9, 2012 - 5:46pm
#7
veggpwr
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Doesn't water in the fuel (such as coolant) also cause white smoke?
Yes. It doesn't matter if it is a diesel or gasoline engine.
 
For smoke particularly related to diesel:
http://www.dieselsmoke.com.au/
 
Black smoke  = incomplete combustion of burnt fuel
White smoke = raw/unburnt fuel
Not sure about air in fuel, may be air in fuel will cause unburnt fuel.

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'05 Cummins CTD 24V HPCR RAM 2500 QC SLT SB Black 4X4 48RE  325 hp  610 ft.lbs
GC Kit  + 3rd Tank WVO(80%)/RUG(20%)  +  Co-Pilot 
3-Tank Operation managed by Co-Pilot: Blending(warm up) / Veggie(hot run) / Diesel(purge for next start)
Smarty Jr  40/70/100 hp (Timing Map Modification)
 

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April 13, 2012 - 9:44pm
#8
fyoung5
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Ok gang! Ive been on cacation, but thanks for all of your insight. Turns out that is was veggie left over in the lines. Not sure what happened, since I purged, but driving around on only diesel for a day has cleared up my problems. I've yet to run a long distance on veg again, but for now the problem seems solved. Now if ican just button up that motor oil leak....

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