300TDI Black Smoke on startup - Defender Source
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  #1  
Old July 13th, 2010, 11:55 AM
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Kirk
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300TDI Black Smoke on startup

I have a relatively new (<5000 miles) 300tdi. It puffs a cloud of black smoke every time I start it. Is this normal? Is there any way to reduce or eliminate it?
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  #2  
Old July 13th, 2010, 12:43 PM
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Kelly Graham
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My truck does it too Kirk.... but I based my truck as being "normal" off of yours. Blind chasing the blind...
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  #3  
Old July 13th, 2010, 12:47 PM
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I see it all the time in other diesels but wonder if it can be "fixed".
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  #4  
Old July 13th, 2010, 01:39 PM
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Frank S
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From what I understand, this is fairly normal. My 300tdi gives off a small puff when started as well. I believe that it is caused by unclean / dirty / old injectors. I may be wrong. You could try running some injector cleaner through the system. If not there is no way to clean / rebuild them by removing them without specialized equipment, as you can do with some other diesels. Only thing u'd be able to do is replace. Search here a little and you'll see a bunch of good threads on the topic. Also as I mentioned, I'm a total noob, so my info may not be 100% accurate.
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  #5  
Old July 13th, 2010, 01:46 PM
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Kirk
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This is a NEW engine. My injectors should be in good shape.
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  #6  
Old July 13th, 2010, 02:11 PM
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mark kellgren
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Mine does it too.
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  #7  
Old July 13th, 2010, 03:06 PM
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Frank S
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I think I remember reading something about small amounts of residual fuel being burned off the injectors upon ignition causing the puff of smoke. And the only way to help stop it was clean / new injectors. Again I may be wrong. So the fact that your engine is new makes me wonder. Is it truly a brand NEW engine? Or is it a rebuilt setup? Is there any possibility that there are some used / non-new parts in it? In any case from what I understand as long as it isn't smoking constantly or when it's under load it's perfectly normal and nothing to worry about.
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  #8  
Old July 13th, 2010, 03:27 PM
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It's an entirely new engine. Not a rebuild. The engine has less than 5k miles total since new.
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  #9  
Old July 13th, 2010, 04:26 PM
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Robert Klima
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All 300tdi's puff out a black cloud every time you start them. They do it even when they are new. Maybe it's caused by the design of the injection system or something else. I'm not sure about but will ask a tdi-specialist over here...
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  #10  
Old July 13th, 2010, 05:04 PM
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Mike Hammond
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It's a feature of the engine, 200tdi's do it too.
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  #11  
Old July 13th, 2010, 05:25 PM
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Jamie Austin
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I think it's along the lines of the excess fuel for cold starting (or just for "starting" in general)

I've driven ones that hardly smoked at all at startup, but their fuelling was wound back so much, there was bugger all power when you drove (to the extent that if you gunned it then just lifted off the gas, the engine would cut out!) a quick turn or so on the fuelling screw soon sorted that little gremlin out.
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  #12  
Old July 13th, 2010, 05:46 PM
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Tony Lawson
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Quote:
Originally Posted by mikeslandrover View Post
It's a feature of the engine, 200tdi's do it too.
mine certainly does. Like a tractor or tug boat. Just lovely in the garage every morning.
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  #13  
Old July 13th, 2010, 06:20 PM
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What was the line from Apocolypse now ? "I love the smell of diesel(napom) in the morning"
All of the Tdi's I have been intimate with smoked a puff on cold startup....
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  #14  
Old July 13th, 2010, 06:24 PM
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Julien Dalbin
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Mine also does it since new, 5 years now. Adjusting the valve clearance won't make any difference on that issue. It's definitely a feature .
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  #15  
Old July 13th, 2010, 07:26 PM
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Carl Jonsson
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Mine always have. Even with new injectors. Looks like that's just the way this engine is. I've adjusted the smoke screw but it doesn't make much of a difference.
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  #16  
Old July 13th, 2010, 07:53 PM
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Ken Jagolta
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Mine always did it too. It is a diesel after all so, par for the course I think......
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  #17  
Old July 13th, 2010, 10:53 PM
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if you don't like it, I may be able to live with it and will take it off your hands, just pm me.
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  #18  
Old July 13th, 2010, 11:10 PM
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Brad Harris
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it's a feature so you know it started okay...

actually mine doesn't do it at all... I don't know what y'alls problem is...
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  #19  
Old July 13th, 2010, 11:10 PM
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  #20  
Old July 13th, 2010, 11:22 PM
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jim pendleton
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Just like any human smoker. Gotta take that first big puff and exhale as soon they get started.
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