Does this look like normal blow-by

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May 18, 2017 | 06:25 PM

JoeF250

Thread Starter

Tuned

Joined: Feb 2005

Posts: 478

Likes: 10

From: Minnesota

Does this look like normal blow-by

Had the intake off today with the engine running trying to diagnose my steering gear for an exchange. Noticed what looks like a genie escaping from the CCV into my engine. I know that's how it's supposed to function, but I'm wondering if maybe I've got a little too much blow by. I'm also aware that this isn't exactly a scientific method of discovery, but let me know what you think.

May 18, 2017 | 07:04 PM

coax9952

Laughing Gas

Joined: Aug 2014

Posts: 1,020

Likes: 9

From: Washington State

That's not blow by.....That's the CCV doing what it's supposed to. I'd close that intake up before you suck something into that turbo. THEN you'd have a bigger problem..........

May 18, 2017 | 09:38 PM

jstihl

Cargo Master

Joined: Sep 2015

Posts: 2,860

Likes: 365

Thats what mine looks like. i have been worried about the knocking noise but sounds like yours has it too. can you tell a distinct difference between passanger and driver side. mine has a knock on the driver side that sounds like yours but cant hear anything like it on the opposite

May 19, 2017 | 12:27 PM

The Brad

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Joined: Nov 2013

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From: SoCal

May 19, 2017 | 12:35 PM

SaintITC

Fleet Mechanic

Joined: Jul 2003

Posts: 1,614

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From: Springfield, PA

I think that's an awesome video. I never thought to evaluate blowby from this perspective. And I think it's a much better perspective than flipping the filler cap over. Makes me wanna run out to my truck now and take a peek - except it's 92° out today..

May 19, 2017 | 07:38 PM

bigreentruck

Tuned

Joined: Feb 2015

Posts: 333

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From: So. Ca

Hey Brad,
That looks a little excessive.

May 19, 2017 | 08:05 PM

z31freakify

Hotshot

Joined: Dec 2012

Posts: 11,278

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From: Las Cruces New Mexico

This is considered bad blow by

This is my OBS BTW...

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May 20, 2017 | 12:59 AM

JoeF250

Thread Starter

Tuned

Joined: Feb 2005

Posts: 478

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From: Minnesota

Quote:

Originally Posted by jstihl

Yeah that knocking noise is definitely more distinct on the driver's side. I've always just assumed it was the #8 injector being noisy. I haven't made time to hutch and harpoon and don't have any fancy crossovers or regulated return systems so I assume I'm sucking air.

Quote:

Originally Posted by The Brad

Quote:

Originally Posted by z31freakify

This is considered bad blow by
https://youtu.be/lFcjzwkuzUU
This is my OBS BTW...

I assume this is with a functioning CCV. I've never been clear on wether the CCV should be plugged when performing a "cap upside down" blow by test. Nice video BTW; puts my mind at ease, education is the best remedy to fear of the unknown. Also nice seats in the mule, did it come with those or is that custom?