Normal to smoke when starting truck? - Ford Powerstroke Diesel Forum
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Old 12-08-2009, 07:16 PM
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Normal to smoke when starting truck?

I have a 2003 f250 7.3L only owned the truck less than a month. I notice everytime i start the truck after is has been sitting a few days it will blow smoke out the exhaust for the first minunite or so. Is this normal on a diesel or something i should be worried about?? I know its oil not antifreeze. I have heard guys at work saying all diesel have blow-by when cold not sure if that is true. thanks for any info
mark
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Old 12-08-2009, 07:28 PM
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Pretty much normal.. shouldnt last too long. of course that could just be condensation burning off too.
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Old 12-08-2009, 10:54 PM
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Mine smokes like h311 for about 2-3 minutes in the morning.

http://www.youtube.com/watch?v=F_IiM09mwbE

First part has my truck
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Old 12-09-2009, 05:22 AM
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A small amount is normal, if you can't see the neighbors house there is probably a issue, namely valve seats.

NCH
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Old 12-09-2009, 08:48 AM
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thanks lol i can definetly see my neighbors. Id say it smokes a little longer than the one in the youtube video but i think thats a 6.0 not positive. At least im not as worried now lol thanks guys
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Old 12-09-2009, 08:51 AM
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When your engine is cold (after sitting a few days) it doesn't burn all the fuel completely until the temp gets up (this is the smoke your seeing). It should be just a slight blue haze coming out of your exhaust. My 7.3 smokes more on a cold startup than any 6.0 I have seen.
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