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Old 05-26-2009, 05:40 PM
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Unknown problem, need help

I have an 03 6.0. New head gaskets, studs, injectors. I noticed the truck smoking blue a little thought was fairly normal. Then went on a little outing one weekend truck went from bad to worse, used about 2 gallons in 100 miles or so. Replaced the turbo thought it was a bad seal, problem got worse. So this last weeking i tore it down again. Turbo looked good: injectors were clean no rolled orings or leaks: heads came off no obvious problems with sealing: the only thing I noticed was strange there is no spray pattern on the pistons. Is this normal, or is it because of the oil being burned?? Could it be an injector or someone got an idea. I am at my wits end. Seems nothing is abnormal?
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Old 05-26-2009, 06:37 PM
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how about checking your crankcase ventalation system, piston rings?

Last edited by WEWILLE; 05-27-2009 at 05:20 AM.
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Old 05-26-2009, 07:11 PM
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just replaced the oil cooler, it doesn't exhibit any symptoms of it being bad. the piston rings there may be a broken one. The bottom end is still in the truck so i haven't pulled it apart yet, even so seems like it would have a miss then? The only question is when i replaced the oil cooler i noticed the ccv valve cover was heavy like it was plugged. I have it vented on both valve covers though. That may be it though huh?
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Old 05-27-2009, 05:20 AM
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Wow yesterday was a long day, and i may have lost my mind! haha ignore the oil cooler comment. the oil cooler will NOT cause blue smoke. haha sorry for tyhe wrong infpormation. So it used 2 galklons in 100 miles? Other than the smoke how does it run? Plenty of power?? You can check the rings by doing a wet and dry compession test, as well as a cylinder leak down. Yes excessive blow by will cause lots of blue smoke. Also check valve stem seals and valve guides. Is the check engine light on? It may also have contaminated fuel or oil.

Last edited by WEWILLE; 05-27-2009 at 11:11 AM.
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Old 05-27-2009, 08:21 PM
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I am in the process of getting the heads inspected. There was very little blowby if any. Have not done a compression test, but the cylinders have factory hone marks with no scratches.
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