Ticking noise

zrider · 04-29-2010, 12:25 AM

anybody hear a loud ticking sort of noise from under their car after driving for a little bit? it sounds like someone is throwing pieces of rock to the under portion of my car. the sound is pretty intense. is this just everyone or just me O.o sounds like its coming from the exhaust. After the car has been turned off i hear that sort of ticking but thats pretty usual as the car is cooling off. but when i get out and the engine is still running the ticking gets really louds sometimes.

Gunzero · 04-29-2010, 12:26 AM

It's the exhaust cooling down.

g96818 · 04-29-2010, 01:36 AM

don't go below 55 mph!!!

Red370 · 04-29-2010, 01:44 AM

Quote:

Originally Posted by Gunzero

It's the exhaust cooling down.

particularly more prevalent with an aftermarket system.

AK370Z · 04-29-2010, 01:55 AM

I made a post 1 year ago and it's just cats cooling off. Nothing to worry about!

Quote:

Originally Posted by AK370Z

I have NO ticking noise from engine area. But, after driving more than half hour (meaning cats are fully warmed up), I get a little ticking noise. I am certain it's NOT engine or injector related. It's coming from cat or exhaust area. Camera was placed RIGHT under left cat, car idling.

VIDEO
YouTube - MOV01759

Quote:

Originally Posted by wstar

Wow, I don't know wtf that is. Can you hear that just standing next to the car, without shoving a camera up by the cat?

The sounds I've been talking about are just subtle repetitive ticks, like a metronome synchronized click-track, that are completely stable (at a given rpm). What you've recorded is something very scratchy and erratic...

Quote:

Originally Posted by AK370Z

It's the EXACT ticking sound you get when you park your car in the garage after driving for a while (engine off). But this one is audible with the engine on, right under the cats. if it helps, tomorrow I can take two videos at the same time with one camera under Left and one under right cat. Next time drive your car for a while. When you come home, instead of turning the car off, go outside and look under the cats. See if you hear anything and report back please. thanks.

To answer your question, YES you can hear it up to 2 feet away from car(if it's really quiet out) . Am I overreacting?

Quote:

Originally Posted by wstar

Re: after the car is turned off, you're talking about the usual ticking from metal contracting as the car cools off? That video doesn't sound anything like that to me. But metal contracting/expanding and making that characteristic sound is normal even when the engine is running as the temps of the components change.

Quote:

Originally Posted by Lyndo

the only thing i can think of is when you let the engine idle it starts to cool down the converter due to less exaust passing through(obviously lol) and then maybe the components inside and the heat sheild maybe contracting a bit, i don't get how this would make the sound on your video but thats the only explanation i could come up with, i did a search on google and wikipedia and other sites and read some stuff of catalytic converters (i'm kinda bored at the moment) but came up empty handed other than a thread on a cadillac forum of a guy describing the exact same thign as you and they seemed to think it was just the cooling off of the components as well but no one could say for sure so who knows.

edit: wstar beat me to it and said basically the same thing lol

Quote:

Originally Posted by AK370Z

Thank you both. I think it makes sense. It's probably cats cooling down as there's less hot air passing through them. BTW, I just realized this thread is for ticking noise from the engine. Sorry OP if I cluttered this thread up

.

Quote:

Originally Posted by spearfish25

Those are normal sounds AK. My car does it as well. Don't worry about it.

Quote:

Originally Posted by AK370Z

it's most likely exhaust/cat converter cooling and contracting.

Quote:

Originally Posted by cave vulture

I get the exact same sound after the car has warmed up and it is clearly audible from inside the Z while driving if you listen for it.

Quote:

Originally Posted by Lyndo

popcorn?

zrider · 04-29-2010, 09:28 AM

^^^ thanks! appreciate it. yea thats what i thought it was coming from. some part of the exhaust system im just relieved i was getting worried for a sec

kenchan · 04-29-2010, 11:00 AM

yah, kinda like someone in the house taking a hot shower and you hear ticking inside the walls from pipes expanding and contracting.

wishihadnav · 04-29-2010, 12:33 PM

what kind of oil you running?..does it have esters?..

archdude · 04-30-2010, 12:11 AM

I have the same issue with my Subaru. It ticks EVERY time i drive it even if i only go 20mph and keep the revs relatively low. It also didn't happen much when i bought the car about a year ago but not it's constant. I guess the metal got old and warps a lot.

wishihadnav · 04-30-2010, 02:39 PM

Quote:

Originally Posted by archdude

I have the same issue with my Subaru. It ticks EVERY time i drive it even if i only go 20mph and keep the revs relatively low. It also didn't happen much when i bought the car about a year ago but not it's constant. I guess the metal got old and warps a lot.

that ticking on the suby are the injectors..its normal.

archdude · 04-30-2010, 10:11 PM

Quote:

Originally Posted by wishihadnav

that ticking on the suby are the injectors..its normal.

Yeah Subarus sometimes sound like sewing machines. But the ticking i'm talking about is definitely some sort of metal cooling esp after I park the car. it's just odd how it happens 10x more than it did when i purchased the car.

Westwood · 07-04-2010, 11:55 AM

bump from the grave

but thats one reason why i want hfc's... that freaking pop corn noise is bugin the **** out of me

Lemers · 07-04-2010, 12:02 PM

Just to make sure you need a bomb sniffing dog to go over your car

corbin09 · 07-27-2010, 04:16 PM

I dont know if it is a different noise, But I get a ticking sound ALL the time. Even when My car is warm and is just idling, already heated. I also have Test Pipes.. I took it to Nissan and they said it could be the injectors but it sounds like it is coming from DIRECTLY where the test pipes are. Would my test pipes be doing the same thing? Please help! This car has sooo many weird quirky sounds

Vegitto-kun · 07-27-2010, 04:57 PM

It is normal. the car ticks when turned off and when its iddling.

its because when you drive you shove alot more hot air through the exhaust.

while iddling its alot less causing the temperature to change making it tick.

04-29-2010, 12:25 AM	#1 (permalink)
zrider Base Member Join Date: Oct 2009 Location: Alexandria, VA Posts: 175 Drives: 2009 370z Black M/T Rep Power: 16	Ticking noise anybody hear a loud ticking sort of noise from under their car after driving for a little bit? it sounds like someone is throwing pieces of rock to the under portion of my car. the sound is pretty intense. is this just everyone or just me O.o sounds like its coming from the exhaust. After the car has been turned off i hear that sort of ticking but thats pretty usual as the car is cooling off. but when i get out and the engine is still running the ticking gets really louds sometimes.

04-29-2010, 12:26 AM	#2 (permalink)
Gunzero Track Member Join Date: Oct 2009 Location: Texas Posts: 889 Drives: Nissan 370z Rep Power: 259	It's the exhaust cooling down. __________________

04-29-2010, 01:36 AM	#3 (permalink)
g96818 Track Member Join Date: May 2009 Location: A rock in a big pond Posts: 681 Drives: 2009 370Z, 2012 M56 Rep Power: 3394	don't go below 55 mph!!! __________________ CZP are lying thieves!

07-04-2010, 11:55 AM	#12 (permalink)
Westwood Track Member Join Date: Feb 2010 Location: Ottawa,Canada Posts: 745 Drives: C63 AMG Rep Power: 16	bump from the grave but thats one reason why i want hfc's... that freaking pop corn noise is bugin the ** out of me __________________ Mods: Stillen G3 \| Stillen lightweight crank pulley \| Berk hfc's \| Top speed pro 1 CBE \| Jic Magic y pipe \| 20" Vossen 9.5/10.5 \| Megan Coilovers \| Smoked JDM tail lights \| Blacked out headlights \| Sprint booster \| Shine Auto CF Front/Rear lip kit \| Evor R CF Side blades,CF fang cover,CF Nose Audio:** Kenwood Excelon DNX9960 \| JL 1000w \| JL 12W6v2

07-04-2010, 12:02 PM	#13 (permalink)
Lemers A True Z Fanatic Join Date: Mar 2010 Location: Izmir, Turkey Posts: 15,371 Drives: 2012 Traverse LTZ Rep Power: 52	Just to make sure you need a bomb sniffing dog to go over your car __________________ 2010 Black Cherry Touring/Sport/Nav Now - 2012 Travese LTZ until I leave for Turkey

04-29-2010, 09:28 AM	#6 (permalink)
zrider Base Member Join Date: Oct 2009 Location: Alexandria, VA Posts: 175 Drives: 2009 370z Black M/T Rep Power: 16	^^^ thanks! appreciate it. yea thats what i thought it was coming from. some part of the exhaust system im just relieved i was getting worried for a sec

04-29-2010, 11:00 AM	#7 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	yah, kinda like someone in the house taking a hot shower and you hear ticking inside the walls from pipes expanding and contracting.

04-29-2010, 12:33 PM	#8 (permalink)
wishihadnav A True Z Fanatic Join Date: Nov 2009 Location: 90090 Posts: 1,851 Drives: Force Fed Nismo Rep Power: 184	what kind of oil you running?..does it have esters?..

04-30-2010, 12:11 AM	#9 (permalink)
archdude Base Member Join Date: Apr 2010 Location: NYC Posts: 2 Drives: Subaru Impreza Rep Power: 15	I have the same issue with my Subaru. It ticks EVERY time i drive it even if i only go 20mph and keep the revs relatively low. It also didn't happen much when i bought the car about a year ago but not it's constant. I guess the metal got old and warps a lot.

07-27-2010, 04:16 PM	#14 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 280	I dont know if it is a different noise, But I get a ticking sound ALL the time. Even when My car is warm and is just idling, already heated. I also have Test Pipes.. I took it to Nissan and they said it could be the injectors but it sounds like it is coming from DIRECTLY where the test pipes are. Would my test pipes be doing the same thing? Please help! This car has sooo many weird quirky sounds

07-27-2010, 04:57 PM	#15 (permalink)
Vegitto-kun A True Z Fanatic Join Date: Feb 2010 Location: USA Posts: 2,011 Drives: 09 370Z Rep Power: 262	It is normal. the car ticks when turned off and when its iddling. its because when you drive you shove alot more hot air through the exhaust. while iddling its alot less causing the temperature to change making it tick.

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