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7.3l PSD Oil Blow-by

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Uploaded by on Jan 2, 2010

This truck is ~ 10 years old with over 230k miles on the clock. I wanted to illustrate the the Blow-by test using the oil filler cap.

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Autos & Vehicles

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Uploader Comments (CPUNeck)

  • What about this video makes you believe the engine isn't up to temp?

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  • @mikey89014 At idle there isnt enough boost from the turbo to be sucking any blow-by into the intake. blow-by will leak thru both the oil filler cap and crank case vent.The ccv does not put enough vacuum on the crank case to "suck" blow-by gasses out.

  • @CPUNeck none of the 7.3 or 6.0 will smoke when there cold but after just a light drive they will smoke its normal

  • why dont you let your motor warm up none of them do it when there cold i have a brand new dealer installed motor in mine and its smoke also is normal

  • that way won't tell you any thing you need to plug the blow by pipe to the intake and use a guage that showes inH2O

  • actually it does.. if he had a cracked piston or ahole in one. you wouldnt be able to keep the oil cap on it. it would be smoking like a freight train.

  • On that engine the blowby gets sucked into the intake. That test doesnt show much.

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