Can anyone identify this knocking noise?

[bigdodge]

Have you tried using a mechanics stethoscope?

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see post 7

 

[misfit.0]

Is the sound when cold or hot?

The expensive tick everyone is afraid about is when hot, at idle, and isn't a consistent tick, its inconsistent and pings around, unlike the sound in your video.

What repair does this tick cause?

 

[RHO]

I have a 2024 Hemi 4x4 with 25k miles. It's been developing a ticking/knocking noise. The dealers told me it's normal and that they can't hear a problem. "It's got Hemi tick." "This manufacturer's engines get noisy" they told me.

The video is from underneath. It can be heard from anywhere. I'm aware of the lifter issues and the exhaust problems. This sounds like a knock. It sounds like its coming from the bell housing, but it could be from anywhere. I've sent the engine oil to blackstone for analysis but it looks clean visually.

Any help or experience would be appreciated! What do you think it is?

no that is not normal as another person stated the Hemi is a very quite motor that sounds like lifter issue , they need to fix it , good luck.

 

[Old Shirt DC]

My 2020 Laramie ended up needing camshaft and lifters at 39K, and it was like showroom new at 5.5yrs. Lucky I had an extended warranty. The invoice totalled $5,500+! Sold it and got a 2026 Laramie with the Hurricane, and not looking back. Quicker, faster, more powerful, and the sound isn't important because sound don't feed the baby! 10yr/100K mile warranty to back it up. Really nice truck.

 

[SD Rebel]

What repair does this tick cause?

This tick is the "bad" one, essentially a failed lifter which will require the head to be removed to access the failed lifter. Often requiring not just a lifter (or lifters) to be replaced, but also the camshaft. This will likely include "while you're in there" replacements of other lifters, etc.

This repair from an independent shop can run into $3,000 - $5,000 or so out of warranty.

 

[misfit.0]

This tick is the "bad" one, essentially a failed lifter which will require the head to be removed to access the failed lifter. Often requiring not just a lifter (or lifters) to be replaced, but also the camshaft. This will likely include "while you're in there" replacements of other lifters, etc.

This repair from an independent shop can run into $3,000 - $5,000 or so out of warranty.

https://imgur.com/a/pe8QsNb

sound anything like this lol

 

[SD Rebel]

https://imgur.com/a/pe8QsNb

sound anything like this lol

Could be, not sure though, but kinda matches, especially if this is a hot engine.

 

[misfit.0]

Could be, not sure though, but kinda matches, especially if this is a hot engine.

Yeah it's hot, that video is yesterday after a 30 mile drive from work.
Gonna hit it with a stethoscope to try and rule out anything on the lower end of the motor but im leaning towards a lifter...hopefully its not a rod knocking or piston slap

 

[kapinallinen2]

Yeah it's hot, that video is yesterday after a 30 mile drive from work.
Gonna hit it with a stethoscope to try and rule out anything on the lower end of the motor but im leaning towards a lifter...hopefully its not a rod knocking or piston slap

Rod knocking is like a hammer on an anvil but little softer, would most likely have spun a bearing already, piston slap, almost like a rod, just softer, where the skirt hits the cylinder wall due to a gummed up wrist pin.
This is from my past experience with a`97 expedition and a 2000 grand Cherokee. The Cherokee 4.0 six actually broke the piston skirt. What a lovely simple engine to work on BTW.

 

[misfit.0]

Rod knocking is like a hammer on an anvil but little softer, would most likely have spun a bearing already, piston slap, almost like a rod, just softer, where the skirt hits the cylinder wall due to a gummed up wrist pin.
This is from my past experience with a`97 expedition and a 2000 grand Cherokee. The Cherokee 4.0 six actually broke the piston skirt. What a lovely simple engine to work on BTW.

Thanks for the info. Ill update when i figure out what it is, hopefully it is JUST a failed lifter.

If thats the case while im in there im going to do a mds delete.