Engine sounds?

[Wardie]

Okay I might be paranoid but I don't know what this sound is. Might be 100% normal, it sounds like something rubbing (hopefully not the timing belt). I did recently change the t-stat, water pump, and timing belt. I haven't had any problems besides losing a little coolant which I am tracking down right now.

Heres a video of it running, let me know if I am crazy or if it something I should be worried about. Its the high pitched squeal.

https://www.youtube.com/watch?v=XAmJmu_1ANQ

Sorry about the wind, put it next to the fan.
Thanks again.

[e30mpg]

sound like your w/p pulley rubbing on the balancer

[Wardie]

sound like your w/p pulley rubbing on the balancer

Yeah sounds like something rubbing. I am going go to look at it real quick. Is it something to be super worried about? I assume so, but its not as bad as a timing belt rubbing.

[Earendil]

Interesting. If I'm identifying the sound correctly, my engine makes the same noise (Still not positive what a perfect M20 sounds like). Please post back with waht you find, and if you do find the issue and fix it, want to spend another 10 minutes and post up another video? :)

[Wardie]

Yeah if I find the problem. I found my coolant leak though, its leaking from my radiator. On the passenger side at the bottom. I think my radiators is toast, but regardless if I find the problem to that noise I will let you know. Plus you're in Seattle I can come help haha.

[dnguyen1963]

Listen with a stethoscope and you can find where the noise is coming from.

[FLG]

Sounds like timing belt is tensioned too tight.

Remove the accessory belts to rule out anything else.

Sent from my Galaxy Nexus using Tapatalk 2

[Earendil]

Listen with a stethoscope and you can find where the noise is coming from.

Ever listened with a stethoscope to the sound of the other end being attacked by the fan? ;)

[jlevie]

It is impossible to tell where the noise is coming from in a video. But what I can say that the car is "red X'd" and should not be driven until the cause is found and fixed. A bit of diagnostic work with an automotive stethoscope should help localize the source of the noise.

[Wardie]

Okay, thanks I will see what I can find. Only have my alternator belt on, no ac or power steering.

[dnguyen1963]

Ever listened with a stethoscope to the sound of the other end being attacked by the fan? ;)

Well, if it is being attacked by the fan you would have found the source of the noise already, wouldn't you? That sort of rubbing noise can be isolated by stethoscope by touching it for about 2 sec at various places.

[Earendil]

Well, if it is being attacked by the fan you would have found the source of the noise already, wouldn't you? That sort of rubbing noise can be isolated by stethoscope by touching it for about 2 sec at various places.

Any protips besides experience? I have a stethoscope that I acquired for just such sleuthing, however I find that I can change the pitch of a sound, but not the volume of it by moving around an engine. Without an ear for what a sound might be, all I can usually confirm is that yes, my engine is producing a sound.

The exception to this is of course things that I have more than one of, like injectors, in which case I can get a baseline to compare to the other 5. But for things like a pulley or internal bearing?

[e30mpg]

why don't u just take off all the belts and let it run for a 30 seconds or so to see if you can hear the noise? if the noise is no longer there, then start from there.

[Earendil]

why don't u just take off all the belts and let it run for a 30 seconds or so to see if you can hear the noise? if the noise is no longer there, then start from there.

He said his only remaining belt is the Alternator belt. I suppose he could remove it and "jump start" the car so that it still had the operator 13.4v, but I wouldn't intentionally run my car off my battery...

Just don't run it without the timing belt ;-)

[jlevie]

With the engine cold, no harm will be done by running the engine for up to two minutes with the alternator/fan belt removed. That will tell if the alternator or water pump is the cause and allow the stethoscope to be place on the timing cover to check the timing belt tensioner.