2008 Escalade : High crankcase pressure & runs rough after rebuild

In this video I show how I figured out the issue of this escalade and the causes of bad running condition

[@druffner3074]

Best technical diagnostic I’ve seen in a long time!

[@DTEAuto]

Glad to hear and thank you for watching

[@brianclark8724]

2 rebuilds and hours of work and stress your vid saved my truck thank you so much for making this vid because everyone else said that wouldn't happen and my truck is doing the same thing so when to my shop and pulled the O2 sensors in front of the cats and no blow by you are the man!!!!!!!!!

[@DTEAuto]

That's super awesome to hear! 🙌 I'm sure you were at wits end with the whole situation, but definitely glad that you got it worked out and glad you found the video for help. Thank you for watching!

[@g-manmaster7958]

Can you please explain what happened? I am having the same issue with a 2008 escalade brand new Rebuilt engine having to much blow by. Thanks

[@eurowerx4267]

Damn!! That pockets gonna hurt!! Back pressure test is must when chasing misfires under acceleration, especially if you’ve got 1 entire bank misfiring

[@glennallen7129]

Love this kind of video! Keep this going! You rock brother! You’re one smart man! Keep them coming!

[@DTEAuto]

Thanks Glenn, glad to hear you liked it! thank you for watching

[@JoelAutomotiveInaction]

Excelente diagnostic 👏👏

[@DTEAuto]

Gracias Joel!👍

[@carlodonnell146]

It makes sense !! It would be interesting to see a follow up.

[@joshclark6101]

Great video by the way learned a lot thank you

[@DTEAuto]

Thanks Josh! glad to hear that, and thank you for watching

[@djosbun]

This one was crazy, Sadel! I wonder if it's one of those "my neighbor builds engines" or if it's a Jasper unit. Either way, that bank 2 cylinder head must have curves like an old-school Mac Tools poster girl. I'm still in shock at that back pressure PSI. Wow!

[@DTEAuto]

this one definitely was a head scratcher for a minute lol and I know for sure it wasn't a jasper type unit, thank you for watching

[@carlodonnell146]

sounds like the ventilation system is blocked somewhere, doesn't it?

[@carlodonnell146]

you mean it sounds like one cylinder is low on compression?

[@carlodonnell146]

Would a tight piston or connecting-rod cause that kind of a problem? Since it was rebuilt, what are the chances of that kind of an error being made?

[@jesusrangel5829]

I do have the same problem what was the issue cause please help

[@DTEAuto]

Coolant was getting into one of the cylinders making it hard to start

[@rudimaier3679]

doing a rebuild, one headgasket left free 😀

[@karuchvz9305]

Where did you learn to analyze the waveform like that , do you have a book or something or can you recommend me a book I can buy? Thanks for you sharing acknowledge

[@DTEAuto]

Karu, I don't have a book .... and I have spent many years "practicing" and looking at known good vehicles of my own and spending tons of hours trying to understand what all the waveforms were showing. Along with trying to self learn via content on the internet. If you watch all my other videos you will find many more waveform breakdowns and explanations of many different type of failures and how they can be found and "seen" with a scope, feel free to browse them all and ask questions as you may. I hope to bring some insight to others by putting these out , thank you for watching

[@geoepi321975]

Check Bernie Thomson he has some free info on ATS site

[@thelegendarywasdgamer9724]

Yea thats called a fucked head gasket buddy.

[@DTEAuto]

I guess

[@g-manmaster7958]

So, what was the final fix to this issue? Were the catalytic converters replaced? Did that fix the problem? I am having exactly the same issue on an exactly same kind of vehicle. PLEASE HELP!!!

[@DTEAuto]

coolant was getting into one of the cylinders making it hard to start