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post #1 of 6 Old 09-10-2009, 05:19 PM Thread Starter
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Constant white smoke

I recently bought a truck from Texas drove it home (1208 miles) it ran like a top. I got home changed the oil, fuel filter and air filter. Within a few hours it was it was smoking a white diesel smelling smoke and missing, also it had (to me) alot of blow by. I took it to the Ford Garage and they put it on there computers and came up with the IDM and two injecters were bad, so all of these thing were replace and rather costley at that. I went and picked it up today it runs alot better but they had no answer to the white smoke that still remains. They say the blow by is only five pecent over factory specs. I got home and noticed that around the fuel filter it was seeping fuel so I replaced it again there is now no seep but the smoke is still there whether the truck is at a idle or running up in the RPM's. Can some one help with this one?
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post #2 of 6 Old 09-10-2009, 05:28 PM
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Injector Cups, low compression on a cylinder, More injectors bad, these are all possible things.

Does it go away when it warms up. Or does it smoke all the time even at operating temp?


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post #3 of 6 Old 09-10-2009, 05:40 PM Thread Starter
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Yes, it smokes when it is cold or warmed up.
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post #4 of 6 Old 09-10-2009, 05:43 PM
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Quote:
Originally Posted by Robert Fridley View Post
Yes, it smokes when it is cold or warmed up.
Well then there is more problems then the dealer fixed. Either air in the fuel system, poor fuel supply, bad injector/s, or injector cups, could also be low compression.

You need to do more diagnosing with the engine. You will need a scan tool. If I was you I would go to a different shop with the truck.


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2005 6.0 Crew Cab Long Box Lariat, current truck

2004 6.0 destroyed by contaminated fuel

2002 7.3L burnt
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post #5 of 6 Old 09-10-2009, 05:44 PM Thread Starter
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The mechanic that work on it also said he cleaned four of the other injector cups while he had it apart, so I would asume he checked those ( but then again you know what they say about asuming something).
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post #6 of 6 Old 09-10-2009, 05:47 PM Thread Starter
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What about the back presure could these things be a cause of it.
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