3.6 tick. rocker arm?

[klst123]

my 2020 gladiator got this sound when its cold start. and after few mins, sound fade.
and... can't hear tick when engine get warmed up . only when engine is cold.

is this rocker arm problem or what is it?

sry for my bad english. im from South Korea.

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[Hootbro]

Sounds like a valve train tick to me.

 

[klst123]

Sounds like a valve train tick to me.

if this is valve train issue as u say, is it common the sound disappear when engine is warmed up ?

 

[Maximus Gladius]

What’s your mileage?

 

[klst123]

What’s your mileage?

about 15000km. for mile..... about 9.5k miles.

 

[Maximus Gladius]

Is this your first winter cold weather season with it? That’s pretty low mileage for a 2020. Is this the original engine? How many oil changes has it had?

 

[Hootbro]

if this is valve train issue as u say, is it common the sound disappear when engine is warmed up ?

Engine tick reported in these 3.6L Pentastar engines have a lot of variable. My speculation in your case is either a lifter sticking until it warms up and takes up the excess valve lash and/or and assembly error where the intake and exhaust lifters might have been put into incorrectly installed positions.

It will get worse over time to the point it will be evident with the engine warmed up.

 

[klst123]

Is this your first winter cold weather season with it? That’s pretty low mileage for a 2020. Is this the original engine? How many oil changes has it had?

i bought this car as used one. when i got this car it was 5.9K miles at first n i changed oil twice so far. n yeah my first winter w this car.

 

[klst123]

Engine tick reported in these 3.6L Pentastar engines have a lot of variable. My speculation in your case is either a lifter sticking until it warms up and takes up the excess valve lash and/or and assembly error where the intake and exhaust lifters might have been put into incorrectly installed positions.

It will get worse over time to the point it will be evident with the engine warmed up.

well at least i hope this is not piston problem . thx for reply.

 

[Maximus Gladius]

I remember early on with my first engine and talking with the service manager, he made the comment “if there’s a tic noise in the engine, bring it in for them to hear as it could be a failing cam, but the noise is specific and we have to hear it. “

Id book it in over night so it’s cold for them to listen too.

 

[ShadowsPapa]

well at least i hope this is not piston problem . thx for reply.

My daughter-in-law is Korean. She operates two schools over there.
Small world.........

Anyway, piston slap is a bit different sound. Valve train is tick tick tick.
If the sound goes away as it warms, there's not likely physical damage. I've noticed that many of these engines have a bit more "tick" when cold. Will listen again on a different computer with better sound.

 

[klst123]

I remember early on with my first engine and talking with the service manager, he made the comment “if there’s a tic noise in the engine, bring it in for them to hear as it could be a failing cam, but the noise is specific and we have to hear it. “

Id book it in over night so it’s cold for them to listen too.

in my case, i can hear it after only 2hours cooling.

 

[klst123]

My daughter-in-law is Korean. She operates two schools over there.
Small world.........

Anyway, piston slap is a bit different sound. Valve train is tick tick tick.
If the sound goes away as it warms, there's not likely physical damage. I've noticed that many of these engines have a bit more "tick" when cold. Will listen again on a different computer with better sound.

i'll upload another warmed up engine sound vid later

 

[GEETCH]

My daughter-in-law is Korean. She operates two schools over there.
Small world.........

Anyway, piston slap is a bit different sound. Valve train is tick tick tick.
If the sound goes away as it warms, there's not likely physical damage. I've noticed that many of these engines have a bit more "tick" when cold. Will listen again on a different computer with better sound.

i second that, i have a slight tick sound when the engine is cold, only lasts a couple minutes, got over 60k miles now with the super on it, no lights or other issues, the tick is very faint. as of this moment i am not worried about it.

though i did pay more attention last year as i seen the threads on the improper installation parts in other threads, getting codes, having to replace cams etc. but i have not had any other associated issues other than a faint tick when cold.

 

[klst123]

i second that, i have a slight tick sound when the engine is cold, only lasts a couple minutes, got over 60k miles now with the super on it, no lights or other issues, the tick is very faint. as of this moment i am not worried about it.

though i did pay more attention last year as i seen the threads on the improper installation parts in other threads, getting codes, having to replace cams etc. but i have not had any other associated issues other than a faint tick when cold.

your tick sound. was it same as mine? watch vid above.

my car is same. tick sound get gone after few mins.

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