I have a 2000 7.3 that's running pretty rough. I just replaced all my injector o-rings and replaced my turbo because it was shot and puking oil all into my intake. It still runs rough, blows a lot of white smoke, and there is oil seeping out of the exhaust manifold at the second cylinder back. (Can't remember if that's 3 or 4) I'm really hoping someone can tell me that it's something other and the piston!

 

Did u check for blow by take the oil filler cap off and see if it smokes and did u inspect ur injector cups when u did ur injector seals

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I haven't pulled of the oil filler cap yet but the drivers side has a lot of blow by out of that tube. And I visually inspected the injector cups while I had the injectors out and they looks alright. the injectors were replaced not too long ago so I didn't think anything would be wrong with them. I probably should have replaced them though eh?

 

The crank case vent tube? And I would take the oil filter cap off then do a pressure test if u really wamt to know it will tell u if a cylinder is worn or has blow by

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sorry it took so long to get back to you. here is an update. I replaced my injector cups and O-rings again. Started it up and ran it for a bit and it still doesn't run right. It smokes like **** now and has a lot of oil running down the back of the motor and out the exhaust. I test drove it hoping it was just residual oil and found when I get into overdrive it feels like its running on two cylinders. exactly how it felt before I replaced all these parts. the oil leaks didn't start till after.

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Oh, and I do have quite a bit of blowby

 

How much when u take off the cap does it look like a frieght train

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Yup it sure does. I'm thinkin I may have been dumb and not let the cups sit long enough before crankin her over.

 

Not sure if cups would cause blow by to be honest did u use red lock tight when u installed them

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Yes I did. I have a few friends tellin me it may just be my turbo making it run like crap and causing oil in my exhaust. The blow by still bothers me.

 

Do u have a boost gaguge if so what u boost and if u have or can get a compression tester that would tell u if ur motor I s good or not mine the 8th cylinder was shot and had low compresson there was my problem

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