[Mb89]

Hello,

On a 2016 Challanger hellcat with 10k miles, is that deeper ticking sound normal? I only really hear it from underneath the car not from the engine bay. It drives fine and doesnt have any codes, is it a knock? Injector tick? Normal? Thanks in advance

November 13, 2022

 

[Mr2AM]

When you say codes, do you mean displayed in the dash or read from the OBDII Port?

Unsure if it matters but is it M6 or A8?

 

[Xylander]

Overall it sounds normal to me. What you might be hearing is a slight exhaust leak. Hellcats are known to have occurrences of exhaust leaks at the flange and make some noise at the exhaust valve. They tend to rattle in time with the RPM, which sounds like a tick on the bottom of the car.

The car doesn't seem to be making any harsh metallic sounds like you'd get off a lifter or stuck valve. If it were, it would get louder and more pronounced under load. If the sound goes away completely under power, then it's likely the exhaust valve rattling. The flange bolts can be tightened if that's what it is. However, on my 2020, tightening the flange three different times only stopped the tick for about a week. It always rattled/shook itself back into the prior state, so after 3 months of chasing it, I let it go.

 

[SickToo]

Sounds like rod knock

Only solution for that is a stroker motor

 

[Mb89]

Overall it sounds normal to me. What you might be hearing is a slight exhaust leak. Hellcats are known to have occurrences of exhaust leaks at the flange and make some noise at the exhaust valve. They tend to rattle in time with the RPM, which sounds like a tick on the bottom of the car.

The car doesn't seem to be making any harsh metallic sounds like you'd get off a lifter or stuck valve. If it were, it would get louder and more pronounced under load. If the sound goes away completely under power, then it's likely the exhaust valve rattling. The flange bolts can be tightened if that's what it is. However, on my 2020, tightening the flange three different times only stopped the tick for about a week. It always rattled/shook itself back into the prior state, so after 3 months of chasing it, I let it go.

Yes it goes away under load, doesnt get louder or anything. I only noticed it recently never paid attention if it was always there and was just worried if it was a knock. But oil pressure stays fine at warm idle (37 psi) and no misfires or anything. But if its just an exhaust leak i dont mind leaving it the way it is

 

[Mb89]

When you say codes, do you mean displayed in the dash or read from the OBDII Port?

Unsure if it matters but is it M6 or A8?

No codes from either the dash or with a reader. Its an A8

 

[Blackcat16]

Exact same sound in my 16 challenger hellcat 😶

 

[Mb89]

Exact same sound in my 16 challenger hellcat 😶

Did you ever find out what it was/if it was anything?

 

[Blackcat16]

Did you ever find out what it was/if it was anything?

I think it’s from bell housing area maybe flex plate or torque converter I’m not sure.

 

[Trevor Wonie]

sometimes my friends think my motor is making a bad noise and to me it sounds like the ~ fuel Injectors
prolly squirting a lot more fuel than a "normal" car

 

[Fastcat62]

Did anyone find what's making the noise I have a 2017 and want to mod it but the noise concerns me

 

[Gotgap]

I think it’s from bell housing area maybe flex plate or torque converter I’m not sure.

I’d say possibly a cracked flex plate