Ticking Sound on top of engine...

wstar · 05-21-2009, 12:24 AM

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.

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...

AK370Z · 05-21-2009, 12:31 AM

Quote:

Originally Posted by Lyndo

popcorn?

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...

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?

wstar · 05-21-2009, 12:53 AM

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.

redzed · 11-28-2009, 04:35 PM

I've heard the same sound from my 370 in the garage. I've only owned it for a week and it has 4.5K on it.

05-21-2009, 12:53 AM	#3 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	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. __________________ 7AT Track Car! Journal thread / Car setup details

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11-28-2009, 04:35 PM	#4 (permalink)
redzed Base Member Join Date: Nov 2009 Location: Charleston SC Posts: 1 Drives: 09 370Z M6 Rep Power: 17	I've heard the same sound from my 370 in the garage. I've only owned it for a week and it has 4.5K on it.