Cat C15 Acert Blow by with video

Try taken it to a different cat shop and see what they tell you I have alot more blowby then that but my has 1 million on it and never been opening up mind is due for a overhaul everyone saying.

 

So what did you ended up doing? Is it a lot of blow by? I have Same engine with almost 700K original miles and it has a lot less blow by. What’s your oil pressure when driving at normal conditions and at the Idle?

 

You sure that all it has on the overhaul and not more

 

If you want piece of mind on blowby you can take it to a CAT shop and have them do a Dyno on it. The Dyno test will include a compression test and from my understanding if your blowby is less than double the engines HP rating then you are good. Last time I did this it was around $375

 

that's more than nominal, but not what I would class excessive.

I would say its either glazed, carbon packed or the rings are soft and wont seal well without boost.

does it use oil?

 

I agree it look like it to me.

 

I have the same problem
2006 Peterbilt 387 with Cat C15 Acert MXS.
This truck was sitting over 2 yr only run engine a few times last year and change oil last august,from this date was run 1 time (1o 2 hr) every week . Just I change Oil pressure sensor it is front right side of engine and check engine was turn off . When start idle 70psi cold later run at 1400 rpm/ 200f /60 psi. I leave engine run only idle the oil pressure down to 25 and 30 psi later go up to 30psi . Is running normal o have something wrong ...

 

@Superhauler