Tell me WTF is this sound (video clip)

Enemigo · Apr 30th, 2004, 11:31 PM

I dunno whats causing this! I'm getting tired of searching for answers, help!

http://www.imagestation.com/album/?i...e=album-invite

(open link, then right click and save to see)

Jose

James · Apr 30th, 2004, 11:37 PM

Does it go up with RPM? Any loss of power? Any stored codes in the ecu?

Enemigo · Apr 30th, 2004, 11:50 PM

Quote:

Originally Posted by James

Does it go up with RPM? Any loss of power? Any stored codes in the ecu?

It does go up with RPM, i haven't driven it since i started to hear it. It didn't seem to lose power, just started boggeling a little. There's no black smoke, idle's just fine.. i dunno!

Jose

James · Apr 30th, 2004, 11:55 PM

Sounds like a spun bearing but I can't tell how it sounds on the clip because it just sounds like one constant sound... have you opened up the valve cover?

Enemigo · Apr 30th, 2004, 11:56 PM

Quote:

Originally Posted by James

Sounds like a spun bearing but I can't tell how it sounds on the clip because it just sounds like one constant sound... have you opened up the valve cover?

Yup, and it seems fine in there.. i really don't know what to look for other than something out of place.

Jose

James · Apr 30th, 2004, 11:59 PM

well hard to tell from a video... my guess is you spun a bearing...

Enemigo · May 1st, 2004, 12:28 AM

Quote:

Originally Posted by James

well hard to tell from a video... my guess is you spun a bearing...

How do you remedy this? Is the engine toast?

Jose

James · May 1st, 2004, 12:31 AM

If you stop driving it now you might be able to take it apart and replace the bearings...

minute rice sentra · May 1st, 2004, 12:37 AM

My brother's Z sounded like that when the crank pulley was rubbing against the timing belt cover, but I think yours sounds more "internal". Maybe it's the timing chain getting ready to give up?

javierb14 · May 1st, 2004, 02:35 AM

from the vid, it does sound like a spun bearing. dont drive it! drain the oil and check for shavings...drop the pan if you have to. fwiw, my buddy bought a running s13/KA motor with a spun bearing for $500.00.....since he was swapping in a SR, we ran the KA for fun...it eventually threw a rod

nissan builds some strong motors

**Asleep** · May 1st, 2004, 02:55 AM

doesnt sound like a bearing to me... sounds like dry lifters. open the valve cover cap and run it again and see if youre getting spray. an even better thing to do is to pull that valve cover and run it to look for oil spray. im leaning more towards low oil pressure and dry lifters or cam lobes.

Enemigo · May 1st, 2004, 11:55 AM

Quote:

Originally Posted by Asleep_94_Altima

doesnt sound like a bearing to me... sounds like dry lifters. open the valve cover cap and run it again and see if youre getting spray. an even better thing to do is to pull that valve cover and run it to look for oil spray. im leaning more towards low oil pressure and dry lifters or cam lobes.

Just to let you know, this all started when the engine completely closed a spark plug, i would say that it caused the car to sputter. I changed the plugs and the noise was still there.. I'm gunna change the oil today.

Jose

**Asleep** · May 1st, 2004, 02:25 PM

so you closed a sparkplug? you mean like hit it with a piston? how did it close on you?

Enemigo · May 1st, 2004, 05:18 PM

Quote:

Originally Posted by Asleep_94_Altima

so you closed a sparkplug? you mean like hit it with a piston? how did it close on you?

I was drving and i was pushing the car hard and but only boosting 7psi.. After i had settled down to cruise speed, the car was boggeling... i went home and check the plugs, and one of them was closed, so i replaced it and still heard the noise..

Jose

Jgsnismoser · May 2nd, 2004, 12:42 PM

Sounds to me like Rod knock. Try unpluging each spark plug at a time to see if the noise stops. If it does then its a rod knock.