Is this an exhaust leak? Video inside...

NIKwoaC · Aug 19, 2010

Sorry guys, I'm tone deaf. WTF is this sound? I thought an exhaust leak was more of a pitter patter... What is this?

Some info:
Car seems to be running fine, vitals look good. Drove it all day today, nothing seems to be acting up, just this strange sound that is barely audible from inside the car. Best I can figure is that it is coming from the driver's side, and isn't there at idle. It only comes on when I rev it up, and if I'm not mistaken, seems to be loudest as the engine is decelerating.

Let me know what you think.

The 86 :: 2010-08-19155252.mp4 video by nikwoac - Photobucket

Haus · Aug 19, 2010

I hear 2 sounds but kinda sounds like a bad pulley to me.

If you take off the belt does it still make the sound

NIKwoaC · Aug 19, 2010

Haus said:
I hear 2 sounds but kinda sounds like a bad pulley to me.

If you take off the belt does it still make the sound

What sounds do you hear? I'm talking about the sputtering whistle.

It's a 25 year old car... Some noises are normal.

Edit: I did try it with the belt off. Same noise.

Haus · Aug 19, 2010

I hear a high pitch noise when you rev it as well. not just the sputtering whine. probably just the sound i get from the video haha

BlackGT89 · Aug 19, 2010

Sounds like a blow off valve ! No really, the high pitch sound when you give it gas might be your mass air whistling a bit (as some are known to do), unless it's a new sound. The other sound, like a wabling noise, could very well be a bearing going bad and when it finds the RPM that makes it unhappy you get the sound. Check your water pump in particular, I've heard them do that before.

Haus · Aug 19, 2010

BlackGT89 said:
Sounds like a blow off valve ! No really, the high pitch sound when you give it gas might be your mass air whistling a bit (as some are known to do), unless it's a new sound. The other sound, like a wabling noise, could very well be a bearing going bad and when it finds the RPM that makes it unhappy you get the sound. Check your water pump in particular, I've heard them do that before.

least im not alone in hearing 2 sounds lol

sounds like a bad bearing to me as well. almost identical when my bearings in my alt. took a ****.

but if the sound is still there when the belt is off the I dunno

NIKwoaC · Aug 19, 2010

Oh, yea, sorry. The 70mm TB whistles a bit. I don't even notice it anymore.

Since the sound is there with the belt off, I can rule out bad bearings in anything.

will1992 · Aug 19, 2010

could be a throw out bearing. does it make noise with the clutch pushed in while revving the motor?

will1992 · Aug 19, 2010

or it could be the starter motor going bad

Shaolin Crane · Aug 20, 2010

I know exaclty what that noise is, if you listen REALLY closely you'll hear...

"Area swap me, i dont want to be ugly any more..."

NIKwoaC · Aug 20, 2010

will1992 said:
could be a throw out bearing. does it make noise with the clutch pushed in while revving the motor?

I guess I'll try that...?

will1992 said:
or it could be the starter motor going bad

This one doesn't even make sense. Besides, the starter is practically brand new.

Shaolin Crane said:
I know exaclty what that noise is, if you listen REALLY closely you'll hear...

"Area swap me, i dont want to be ugly any more..."

Hahaha, you a-hole.

Shaolin Crane · Aug 20, 2010

NikwoaC said:
I guess I'll try that...?

This one doesn't even make sense. Besides, the starter is practically brand new.

Hahaha, you a-hole.

Just tryin to help , honestly have no clue what that noise is, sounds kinda scrapy though, like something is grinding. I think i recall my old PS pump making a similar noise.

twistedwankel · Aug 21, 2010

Whatever it is it sounds bad. When's the last time you pulled the valve covers? Replaced the timing chain? Time to cut open the oil filter for a look see I think.

The engine bay looks extraordinarily clean with alot of work done to it.

CDQICKGT · Aug 21, 2010

Ive heard that exact noise before on a 88' i used to have. believe it or not, I had a valve guide that went bad. It ended up causing tons of excess play(obviously) and the sound echoed pefectly out of the #2 header tube.

NIKwoaC · Aug 21, 2010

Yikes, I hope it isn't anything that serious. The engine doesn't even have 90K on it.

CDQICKGT · Aug 21, 2010

My money says you have a tail light out though

NIKwoaC · Aug 21, 2010

CDQICKGT said:
My money says you have a tail light out though

Huh? I don't get it...

How many miles were on that '88 when the valve guide went out?

CDQICKGT · Aug 21, 2010

Bout 85k IIRC

torch93 · Aug 22, 2010

I had a similar noise and I found a small vaccum leak from one of my hoses.. Had a crack from being really old.. Hope this helps.

SableSal · Aug 22, 2010

torch93 said:
I had a similar noise and I found a small vaccum leak from one of my hoses.. Had a crack from being really old.. Hope this helps.

I second this, sounds like an intake leak or vacuum leak.

Is this an exhaust leak? Video inside...

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