need to diagnose a bad engine rattle(Video inside)

[newtoyota]

I haven't taken the belt or done anything, the rattle started like a couple month ago but was barely noticeable. Now it's just too loud and need to deal with it.

http://imageshack.us/clip/my-videos/210/co7.mp4/


what does it sound like to you? spun bearing? massive exhaust leak ?

it's a little similar to this one, but stays with rev's....
4AFE 1.6 making a weird noise

if anyone had this rattle before and found out what it was please post !

[speedy25]

It should make you happy that I cant ear any rod knock. You'll know it when you get an engine with it!

Like in the other link.. What is the condition of your engine mounts?

-SP

[newtoyota]

that's a relief, that i won't need a new engine.
But I can't live with that sound, i barely step on the gas it sounds like something will fall apart (like in the video.)

engine mounts are not too bad(not much shaking), and how would they make a noise like that anyways?

[Bitter]

Broken flex pipe/cracked manifold/large exhaust leak.

[newtoyota]

alright so will start by checking the exhaust system, any other suggestions what might be causing it ?

can any internal engine parts make a sound like that ? (stuck valve..etc?) because it sounds like its coming straight out of the engine itself.

[speedy25]

It sounds like it but the engine mounts need to be removed and inspected. Just looking at them you cant really tell. Remove them and it becomes very obvious.

-SP

[newtoyota]

update: so the flex pipe was broken and got it fixed today. Thanks Bitter.

however that was only a part of the rattle, there is still a rattle, here is a video with a leak-less exhaust system:

http://imageshack.us/clip/my-videos/641/u6gr.mp4/

[Corolla Sound]

It very well may be the valves. I had a similar issue (engine making chugging noise and vibrating violently (worse then yours)) and it turned out to be a blown head gasket and I had to recondition my valves and cylinder head. It also turned out that I lost compression in 3 of my cylinders which most likely caused the violent vibration. Still dont know how I blew my head gasket from 2 small revs under 5000 rpm each. Just my luck

[Bitter]

Originally Posted by newtoyota

update: so the flex pipe was broken and got it fixed today. Thanks Bitter.

however that was only a part of the rattle, there is still a rattle, here is a video with a leak-less exhaust system:

http://imageshack.us/clip/my-videos/641/u6gr.mp4/

Honestly, I'm not hearing it.

[newtoyota]

here is a better video:
http://imageshack.us/clip/my-videos/263/7ot.mp4/

not sure if it's normal, let me know what you guys think

[Bitter]

I still can't hear anything other than an engine revving, try with the camera below the engine?

[moschinoespin]

Originally Posted by bitter

broken flex pipe/cracked manifold/large exhaust leak.

this ^^^^^^ i guess header