Rattle/ticking sound above 4000 rpm

jameZ_10 · 10-15-2016, 11:00 AM

Quote:

Originally Posted by SouthArk370Z

Engine is moving under load and causing a moving part to come in contact with something?

Moving part inside the engine or something rattling under the hood?

SouthArk370Z · 10-15-2016, 11:59 AM

Quote:

Originally Posted by jameZ_10

Moving part inside the engine or something rattling under the hood?

External - belt, pulley, manifold, heat shield, &c.

jameZ_10 · 10-15-2016, 12:22 PM

With window down the sound is non existent. Lol. Only time I hear it is with with windows up and no radio

jameZ_10 · 10-15-2016, 01:19 PM

So if it were internal it would rattle at all times under a load or not?

jchammond · 10-15-2016, 01:31 PM

is your coolant or oil temp climbing up? sound's like you got some bad fuel.....
My ~Z~has only had e-free 93 the past 65k miles...with exception of a couple times/ & i heard the injectors clicking.
I know it's hard to get in different states & harder in mine.

jameZ_10 · 10-15-2016, 06:38 PM

I have e- free 93 here in my town. Last 2 tanks came from Murphy USA (Walmart) 93 10%

jameZ_10 · 10-15-2016, 06:38 PM

No temp rises. All normal

jameZ_10 · 10-16-2016, 05:02 PM

I tracked the car today. She ran dead on as usual the noise wasn't noticeable at the track ( concentration) however no issues so I give up. If it doesn't affect the car then I'll chalk it up to me just being paranoid to a sound that was always there but just now noticed

user123 · 11-12-2019, 03:10 PM

Quote:

Originally Posted by jameZ_10

Ok everybody I got the oil changed with Nissan ester. The sound at a hard pull is still there. I wish I could explain the sound better. Anyways. Today I decided to make pulls form 3k to 4k as I got close to 4k the sound showed up as usual. I maintained 4500 rpm and the sound leaves. Pull from 4500 to 5000 and the sound comes back. I maintain 5000 the sound leAves. Same when pulling to 6000. Noise while making it to 6000 but leaves as soon I match the throttle to maintain 6000. Could it be injectors? Almost sounds like when a spark plug is tested when you can see the spark jump. Just a random fast sparatic sound.

Are you still having the noises?

I have the same issue. Only when i hit the throttle hard the noise comes. Doesnt do it while parked and revving. Like you mentioned, if i accelerate smoothly there is no noise. Only when i jam the gas. It sounds like a combination of hissing/air leaking/rasp/metal in a can. It kind of sounds like a clogged cat but i have test pipes and a CBE.

10-15-2016, 12:22 PM	#18 (permalink)
jameZ_10 Base Member Join Date: Sep 2016 Location: Batesville, AR Posts: 51 Drives: 10 Nissan 370z AT7 Rep Power: 8	With window down the sound is non existent. Lol. Only time I hear it is with with windows up and no radio __________________ stillen G3 * Invidia TP and CBE * uprev tune* 308 WHP

10-15-2016, 01:19 PM	#19 (permalink)
jameZ_10 Base Member Join Date: Sep 2016 Location: Batesville, AR Posts: 51 Drives: 10 Nissan 370z AT7 Rep Power: 8	So if it were internal it would rattle at all times under a load or not? __________________ stillen G3 * Invidia TP and CBE * uprev tune* 308 WHP

10-15-2016, 01:31 PM	#20 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 57 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684394	is your coolant or oil temp climbing up? sound's like you got some bad fuel..... My ~Z~has only had e-free 93 the past 65k miles...with exception of a couple times/ & i heard the injectors clicking. I know it's hard to get in different states & harder in mine. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

10-15-2016, 06:38 PM	#21 (permalink)
jameZ_10 Base Member Join Date: Sep 2016 Location: Batesville, AR Posts: 51 Drives: 10 Nissan 370z AT7 Rep Power: 8	I have e- free 93 here in my town. Last 2 tanks came from Murphy USA (Walmart) 93 10% __________________ stillen G3 * Invidia TP and CBE * uprev tune* 308 WHP

10-15-2016, 06:38 PM	#22 (permalink)
jameZ_10 Base Member Join Date: Sep 2016 Location: Batesville, AR Posts: 51 Drives: 10 Nissan 370z AT7 Rep Power: 8	No temp rises. All normal jchammond likes this. __________________ stillen G3 * Invidia TP and CBE * uprev tune* 308 WHP

10-16-2016, 05:02 PM	#23 (permalink)
jameZ_10 Base Member Join Date: Sep 2016 Location: Batesville, AR Posts: 51 Drives: 10 Nissan 370z AT7 Rep Power: 8	I tracked the car today. She ran dead on as usual the noise wasn't noticeable at the track ( concentration) however no issues so I give up. If it doesn't affect the car then I'll chalk it up to me just being paranoid to a sound that was always there but just now noticed __________________ stillen G3 * Invidia TP and CBE * uprev tune* 308 WHP

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