*edit* I apologize. I'm at work so couldn't turn up the volume much. There definitely is a lot of noise that shouldn't be there. Get another opinion. It DOES sound like a diesel

 

just a sec

 

5 min.

 

New video:

http://www2.djn-ice.com/CSOCSO-SUPRA/weirdsound2.WMV

but im going to re-record it tonight. u cant really here it on this vid.

 

I would record mine but it is about 15 degrees out and blowing 30mph - yup sounds like a lot of valve noise - I hooked up the ear phones on my PC and can really hear it. Are you running the 5w20 or the 5w30 weight oil?
It will sound a lot different under the hood than what you are used to from inside the car but that does sound a bit noiser than it should.

 

valve train or timing chain

 

so? is it gonna cost a lot?

 

Hard to say - if you have a lot of hard miles on the engine you could need a valve adjustment. The first thing is to do a compression check - that tells you if there is any valve damage to the seat where the valves seal against the head. If they are worn and not seating properly you end up with reduced compression pressure and you see that right away on the compression gauge they stick in the spark plug hole when they crank the engine over. If left that way it will result in eventually burning the valves and seats requiring more expensive repair. If they are out of adjustment then something may have worn which is unusual for these well built engines unless you have had an oil problem - the oil prevents metal to metal contact. I am not sure if the valve adjustment in the tC is shimed or adjustable but if it is adjustable then the adjustment may have moved or somehow your valves got shorter - which is not normal btw. Hardened steel alloy valves usually don't get shorter. Carbon buildup on the valves and seat can also occur but only if you really don't drive it much or have a fuel injection problem running extra rich or cold. If carbon builds up then the valves seat on carbon and get a little loose on the cam clearances and make more noise.
Now the cam chain is a totally different matter since it has some type of adjuster to keep it tight which can malfunction and wear as well as the chain itself can wear and make more noise. Depends upon engine stress and the quality of the oil you have been running with.
Bottom line is if the compression test is ok and your mileage is ok then you probably don't need to worry about it. If it really bothers you have the valves adjusted. There are threads here that show the covers being removed - it is a bit of work so ask around for pricing before you commit to having the work done - I assume you will not be doing it yourself. You also should listen to a few more tC engines setup like yours is to see if they sound the same. I know my xB does not sound like that at all but I am running some really different lube in the engine that makes it run quieter.

 

1) car has 36000 miles (2005 tc)
2) i drive a lot (around 70 miles daily)

those things is under warranty? ( i bought the car when it had 33k miles. and they give me some kind of extended warranty)
when i bought the car it was already modded ( muffler, headers, cai...) and i bought from the local toyota dealership.

 

Dealers have something called "hidden warranties." Complain complain complain, and make a lot of noise. They'll probably fix it.

You are protected by something called the Lemon Law. I know the lawyer who wrote it, so if you want to hire someone who will get you your money back, let me know (and he's local).

They win almost ALL of their cases.

 

First, the lemon law is no good for a one time occurance unless they cant fix it.

Next, every state has its own lemon law, they were not all written by the same person.

We have hydraulic lifters, and you should not need to adjust anything in the valvetrain, especially at the mileage you are running.

It sounds like valvetrain noise to me, but it is hard to say from what we know what caused it. Running a heavier weight oil in many toyotas can cause this, but I dont know if this is the case here.

If it is the timing chain, then there could be multiple problems. If they used an oil fed timing chain tensioner (which I think this motor does) then it could be that there is little oil pressure being fed to that part.

If the previous owner did not change the oil as needed, then the engine could be gunked up to the point that the lifters are bleeding down and are not pumping up correctly, making the top end clatter.

But again, with the video sound and not having the car right in front of us, it is very hard to tell. If it is the valve train or the timing chain, repair will not be cheap if you dont do it yourself.

If you dont have someone you know that can troubleshoot it in person, then I reccomend finding a good, private shop with someone who really knows there stuff to take a listen, probe around and isolate the noise. Otherwise you we are just making guesses with little to base it on.

 

Look Here
https://www.scionlife.com/tech/parts/?fiche=tc05_1_C02

The lifters are buckets and springs with retainers and valves - no hydralics. The cam chain tensioner looks like it is oil pressure tensioned however.

 

You are correct. In looking, we have bucket type "lifters". I am not sure what I was thinking there...

To adjust, you swap out the buckets. So again, no need for adjusting the valves for him unless there are serious wear issues present. This could be the case, but I would bet on something else being the culprit. I honestly dont hear a ton of noise in that second video, but it is hard to tell, especially on a laptop sound card

 

and now i realized i have another noise! i hear popping noise when i change the gear and after that when i step of the clutch.

i would say motormount but why is it popping when i changin my gear?

 

Shouldn't when changing gears unless the engine pops when you back off the throttle and the rpm is dropping which would indicate a valve problem. Motor mounts can get loose from excessive torqueing in lower gears - see if it does it in first and second gear if you accelerate and decelerate in one gear by playing with the gas only. Lower gears put the most stress on the motor mounts.

 

I have seen, not on a lot, but on some, a broken "finger" in the clutch do something very similar to this. Rattle rattle rattle. And it will sometimes stop when disengaging the clutch. Could also be a number of other clutch related things. Does it pop when the pedeal is moving?

If this is the case, it will be much more noticeable on the tranny side of the engine.

Either get a mechanics stethescope, or a long screwdriver with your ear pressed to the handle (even better if it has metal all the way through the handle) and probe around the engine. Try up near the head and along different parts of the block. You should be able to tell where it is coming from and isolate from there.

 

wich pedal?
Does it pop when the pedeal is moving?
sometimes i cant really hear it because its has to be perfectly quiet!
it means i cant hear it if i hardly rev up.
what i need is: windows closed-no backround noise.. etc.. the best time to hear it is around midnight in a really dead street. then you gonna hear it immediately...

so it has some.. craking/poping noise just when i take it out from gear and tryin to put it in to the next gear. then.. whem im release the clutch i have another one.

but yesterday i heard the whole thing when i stopped! i wasnt moving and i just played with the stick ( changed the gears [ of course i pressed the clutch all the way down!! :D !!] and i heard that noise! i dont know. im gonna take it to the dealership.. the only problem is: my mom told me: they gonna give me an appointment in the next week or two.


(mom has celica)

 

You could have a little clutch drag that puts a little load on the gears and they will pop a little when you pull them out of one gear - I catch myself doing it sometimes when I pull it out of first gear before the clutch pedal is all the way down to the floor. But you could also have a release finger on the clutch spring cracked too. Engine mount on xBs have bolts that get loose on the rear tranny mount that pop as the engine torques as the treads of the bolt work in and out of the hole they pass through. It's why the book says to check on chassis bolts and nuts every 5000 miles.
This is why I buy new and not someones used car unless I know them personally.

Sounds like you need to take a dealer mechanic for a test drive. But tell them you are trying to save them some expensive repairs under their warrenty by catching any problems before something big breaks!

 

im back!!! so.. i went to thedealership. they said they will check it tommorow but they think its not a big problem its should be a regular sound from a car with headers. then i went to the scion dealership. i know a few people from there they said its normal.. they have thicking noise too and the headers make it louder.... hm... anyway.. that transmission think is still annoying.

BTW I JUST GOT MY MEGAN STRUT BAR>> MUHAHAHA..

/me went to install:D

 

You're absolutely right there. . . I have no argument with that.