Lets check for some blow by! 400K BLOW BY TEST!

2008 LMM Duramax 6.6 deleted and tuned how to do a blow by test.

[jnpainting]

My cap doesnt move much on there but can see a bit of white steam come out is that normal?

[scottsimmons]

Sounds like you should do injector balance test

[Legally_its_a_joke]

Arent you supposed to do it when its warm and the oil thins out?

[AutodidactEngineer]

Pinch the PCV valve first then test it