Hemi tick

Jeepstin392 · Mar 16, 2023

Yep
Perfectly normal

byhumba · Mar 16, 2023

Jeepstin392 said:
Yep
Perfectly normal

It is so normal I would think something is wrong if I don't hear it at startup.

Uncommon Sense · Mar 16, 2023

It is normal. 392 engines do have lifter failures and a ticking noise is an indication it is imminent. Tick at start up is normal. Ticking while warm could be an issue IIRC as it could be lifters..

Jeepstin392 · Mar 16, 2023

Not exactly accurate.
It’s the lifter roller tapping the cam lobe. Dirty oil or infrequent oil changes can certainly make it worse, getting louder, etc., which could then lead to failure.
It “goes away” slightly once the oil is flowing. However, it’s still present.
But whether the noise is temporary or constant, isn’t the indicator of imminent failure.

Generally, a shit design.
There was a lawsuit filed in December relative to the Hemi tick. Not sure where it is currently.

olllllo · Mar 17, 2023

Guess I’m not normal

no ticking from my beast. Maybe it’s because I park it in the 2nd bedroom and it sleeps at 68 degrees.

hardhat · Mar 17, 2023

No tick here either. I have the exhaust squeak when cold, but then the thing purrs like a kitten. Perfect valvetrain noise. No isolated 1 cylinder louder than the others tick. My wife had a lexus rx300 that had a tick that was fine until it dropped a valve.

Thank goodness for extended warranty.

The hemi tick I have seen on youtube is due to insufficient cam lubrication at low engine rpm as it is splash lubricated. Supposedly avoiding prolonged idling can help prevent this. I thought this precaution sounded reasonable, so I rev the engine every couple minutes while idling or put tazer into winch mode and raise idle to 1300 rpm. Don't know if that helps, but easy precaution.

yjf392 · Mar 17, 2023

My 392 has the cold start noise, but it sounds more like exhaust not ticking. What worries me it’s the noise I hear under acceleration, do any of you hear a noise under hard acceleration?

Jeepherz · Mar 17, 2023

I can't hear anything aside from the money flying out of my purse at full throttle.

What is the noise you are hearing?

What I find strange is the HEMI on my Ram never ticked nor was addressing it as "normal" in the manual. Can't tell you how much that tick bugs me. I hate boasting about it and then starting it the engine ...tick tick tick.

hardhat · Mar 17, 2023

yjf392 said:
My 392 has the cold start noise, but it sounds more like exhaust not ticking. What worries me it’s the noise I hear under acceleration, do any of you hear a noise under hard acceleration?

I had a weird rattle under moderately hard acceleration, but it was coming from rear of vehicle. Thought is was some stuff I had in cargo area under mat, but it went away before I could get it figured out. Concern for catastrophic engine failure or some MDS related lifter failure is what keeps me from modifying engine. I don't want a bunch of out of pocket expenses if something goes boom.

Bobo57 · Mar 17, 2023

Jeepherz said:
I can't hear anything aside from the money flying out of my purse at full throttle. What is the noise you are hearing?

What I find strange is the HEMI on my Ram never ticked nor was addressing it as "normal" in the manual. Can't tell you how much that tick bugs me. I hate boasting about it and then starting it the engine ...tick tick tick.

Agree, mechanical noises like that are never a good sign, no matter what the manual says.

yjf392 · Mar 17, 2023

Jeepherz said:
I can't hear anything aside from the money flying out of my purse at full throttle. What is the noise you are hearing?

What I find strange is the HEMI on my Ram never ticked nor was addressing it as "normal" in the manual. Can't tell you how much that tick bugs me. I hate boasting about it and then starting it the engine ...tick tick tick.

It sounds very similar to the sound clip in this thread, https://www.jlwranglerforums.com/forum/threads/hissing-squeal-when-driving.77944/
When it’s cold you can hear it under light acceleration. After the car warms up I can hear it under hard acceleration. Oh, of course this is when the performance exhaust is off. I’m having my local dealership look into it the upcoming Monday, hopefully they can find something…

Bobo57 · Mar 17, 2023

yjf392 said:
It sounds very similar to the sound clip in this thread, https://www.jlwranglerforums.com/forum/threads/hissing-squeal-when-driving.77944/
When it’s cold you can hear it under light acceleration. After the car warms up I can hear it under hard acceleration. Oh, of course this is when the performance exhaust is off. I’m having my local dealership look into it the upcoming Monday, hopefully they can find something…

Can't hear anything in that clip except wind noise.

yjf392 · Mar 17, 2023

Bobo57 said:
Can't hear anything in that clip except wind noise.

At the beginning, at 00:09s, at 00:17s, a hissing type noise.

Robr651 · Mar 17, 2023

yjf392 said:
It sounds very similar to the sound clip in this thread, https://www.jlwranglerforums.com/forum/threads/hissing-squeal-when-driving.77944/
When it’s cold you can hear it under light acceleration. After the car warms up I can hear it under hard acceleration. Oh, of course this is when the performance exhaust is off. I’m having my local dealership look into it the upcoming Monday, hopefully they can find something…

Sounds like an exhaust leak

Bobo57 · Mar 17, 2023

Robr651 said:
Sounds like an exhaust leak

There was a video on you tube showing a possible tick was caused by a broken exhaust bolt.

yjf392 · Mar 17, 2023

That’s also my assumption at this point, but it’s really hard to believe a new car has exhaust since day two.

Hooper · Mar 17, 2023

yjf392 said:
My 392 has the cold start noise, but it sounds more like exhaust not ticking. What worries me it’s the noise I hear under acceleration, do any of you hear a noise under hard acceleration?

Only hear mine on start up and only last for 30 sec or so here is a video

Bobo57 · Mar 17, 2023

Robr651 · Mar 17, 2023

yjf392 said:
That’s also my assumption at this point, but it’s really hard to believe a new car has exhaust since day two.

Not really…. They’re mass produced. There was a similar sound on an exhaust on the TRX forum (new truck) and it ended up being a cracked exhaust flange. The poster couldn’t see it until they pulled the exhaust off.