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Old Sep 16, 2008 | 08:45 PM
  #1  
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Unhappy blowby

well, i replaced two injector. but now it has alot of blowby coming out of the
oil tube. so do i rebuild this one or buy a new one,if so where a good place to buy one. its a 2000 with 80000miles on it.
 
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Old Sep 16, 2008 | 08:50 PM
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That is awful sketchy. Why did you replace injectors? Now it has blowby? Not before? Give us more details/background or we will blindly spend your money for you.
 
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Old Sep 16, 2008 | 08:56 PM
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Agreed, a truck with only 80K shouldn't need injectors or have excessive blowby.
 
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Old Sep 16, 2008 | 09:08 PM
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it was skipping very bad , so i went and got a scan. said that number 3 and 7 injector was bad so replaced. still has a little skip to it and smoking.took the oil cap off smoke!!!!
 
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Old Sep 16, 2008 | 09:10 PM
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Where do you live Walker? Never mind, I see Guyton Ga? where is that?

BTW, does it use oil or smoke excessively out the exhaust?
 
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Old Sep 16, 2008 | 09:11 PM
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you will have some blowby
 
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Old Sep 16, 2008 | 09:23 PM
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its smoking bad. its burns your eyes .. so how much blowby does it has? farmboypowerstroke ( Guyton,Ga)
 
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Old Sep 16, 2008 | 09:27 PM
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You need a compression check if that is out the exhaust. That would be my next step. It's not that hard but you need the tools.
 
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Old Sep 16, 2008 | 09:40 PM
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what do i need, and where step by step to do it .. thanks for all the help
 
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Old Sep 16, 2008 | 09:46 PM
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Here's a link to some video's of fumes out the oil fill cover & CCV mod. How does yours compare to these?

I agree, 80K seems to be low miles for these kind of issues:

YouTube - Ford Powerstroke Blow By

http://s304.photobucket.com/albums/n...nt=CCVvent.flv

http://s304.photobucket.com/albums/n...oilfillcap.flv

YouTube - Smoking Oil Fill tube


https://www.ford-trucks.com/forums/7...ml#post6553135
 
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Old Sep 16, 2008 | 09:49 PM
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You need a compression tester with the 7.3 GP adapter. Try to borrow one if you can.

Remove the CAC tubes and turbo intake.

Pull valve covers.

Remove glow plugs, all of them.

Install adapter into each GP hole and test each by cranking. Make sure to disable the injectors by your choice of method. Among the easy ones is disconnecting the under valve cover harness connectors or UVC connector or simply unplug the CMP sensor. Keep the batteries charged.

You will be looking for a minimum of 375 but 400 and above is mo betta.

If I left anything out, someone feel free to chime in. It really is not that hard to do. A remote starter is handy but not required.
 
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Old Sep 16, 2008 | 10:40 PM
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mine smokes alot more outa the tube than rich's videos mine has about 115k on it but im also currently in diesel school with access to all the nice tools and diagnostic stuff so im gonna run some compression test and tune ups here shortly
 
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Old Sep 16, 2008 | 10:45 PM
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Blowby is normal for the 7.3L.

Also if you still have a miss after replacing injectors, then you are chasing a phantom problem. Did you replace the CPS recently under the Ford recall?
 
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Old Sep 16, 2008 | 10:52 PM
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yes mine is smoking more than those vid.
 
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