6.0 Knock

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Mar 11, 2018 | 10:48 PM

#16

texinwa

Senior User

Joined: Oct 2017

Posts: 360

Likes: 0

From: Olympia, WA area

Did you increase the rpm at one point in the video? If so, the knocking sound didn't increase with it. Maybe my ears are getting old.

Mar 11, 2018 | 11:32 PM

#17

BLADE35

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Joined: Apr 2010

Posts: 19,061

Likes: 238

From: Saratoga Springs,UT

Thanks jack

Sure seamed to idle smooth the engine didn't jump around Like it was down a cylinder

Sure had that loud diesel clatter sound

Mar 12, 2018 | 12:02 AM

#18

TooManyToys.

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Joined: Dec 2014

Posts: 17,829

Likes: 3,114

From: Jersey Shore

I have an old habit of checking a motor, gas or diesel, by jumping the starter to quickly get a feel for cylinder balance. You don’t need the vid if you’ve got a reasonable handle on cylinder dropout.

I agree the vid doesn't shake like what I was expecting based on the comment of the blow out tire shaking and the driveway startup. The rhythm seems OK, but it sounds like a tractor motor. Phone and screen diag is always tough.

Mar 12, 2018 | 06:48 AM

#19

mattdoc88

Laughing Gas

Joined: Oct 2013

Posts: 817

Likes: 6

Quote:

Originally Posted by 3LTrucking

be able to tell that just thru a video of it cranking or will I need to actually set it up for a compression test?

If it sounds like this during cranking, it only has 7 cylinders with compression . I had a torched exhaust valve and slightly melted piston .
https://youtu.be/GOSrVP2_XB4