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Old 03-13-2013, 02:09 PM
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Smoke upon cold start

The truck is an 02 has 140,000 miles. I started it this morning and she blew a huge puff of smoke and it smelled like burnt oil. She has been using oil for a little while now about two quarts every 4000 miles. I have had a cold smoking issue for a couple years now and it smokes like a freight train, but it smells like fuel. My number 5 cyl has 390 psi compression. I have changed and replaced everything related to the fuel system, GPS, relay, uvch, Uvc gaskets. There is too many things I've changed to list. Any ideas? I'm thinking valve seals. Thanks for the help!
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Old 03-13-2013, 04:53 PM
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Any ideas why I am smelling burnt oil? Should I mess with the CCV?
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Old 03-14-2013, 09:33 AM
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Why is it everytime I put the truck in neutral while I'm rolling down the street and rev the throttle it will blow out a puff of blue smoke? Also if I put it back into drive and put the pedal to the floor from a coast about 30mph it will blow a puff of blue then black smoke comes out why? Any help?
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Old 03-14-2013, 12:21 PM
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did a little reading, and alls pointing back to bad injector/s or injector o-rings. Have you done the oil cap test, to check for blowby?
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Old 03-14-2013, 12:58 PM
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New injects all 8 oil cap test showed nothing at all. Barely any blowby just some smoke out the fill hole and the cap just sits on the tube that's it!!

Chris
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Old 03-14-2013, 02:44 PM
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Have you checked the fuel bowl for oil yet?


I'd guess injector O rings, or turbo seals.
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Old 03-14-2013, 02:48 PM
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Fuel bowl no oil turbo rebuilt with all new seals. I've replaced everything I can think of. Any other ideas?
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Old 03-14-2013, 05:16 PM
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with it idling/smoking, unplug the MAT sensor, located in the middle of the spider assy...i'll post "thread" when i find it.
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Old 03-14-2013, 05:22 PM
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IF your 7.3 starts blowing white smoke, and stumbling - READ THIS - MAT SENSOR
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Old 03-14-2013, 09:09 PM
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Replaced Mat Sensor icp sensor ipr sensor air intake sensor inside the airbox. Any other ideas?
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