Can I borrow your ears? Engine noise (video)

[Kjhadfield]

Not sure how long I have noticed this- been awhile and it's been bothering me so I finally figured out how to upload a YouTube video for help.

http://youtu.be/Ci4aMmYgX1U

What does this possibly sound like?

What should I do next to identify/diagnosis?

Thanks in advanced for suggestions & HAPPY INDEPENDENCE DAY (Don't forget the true meaning), it can/is being taken from us little by little unless we all stand together and unite (all I'm saying is saying nothing is just as bad). Sorry I got a little carried away, just get tired of watching fellow citizens going about life with their eyes closed and ears shut- under the impression Our freedom is a given, when in reality we need to constantly fight to make sure they aren't stripped from us.

 

[just1me]

It' doesn't sound to bad reference - https://www.youtube.com/watch?v=rEoPdC3-eoo
You could always check your timing chain tensioners to see if they are still alright.

 

[sgully67]

I agree check the timing chains. Might also want to check the rest of the valve train as well.

 

[Kjhadfield]

It' doesn't sound to bad reference - https://www.youtube.com/watch?v=rEoPdC3-eoo
You could always check your timing chain tensioners to see if they are still alright.

It may be similar in noise but definitely not as loud as the video you linked. I thought the timing chain was mostly noticed on cold starts and possibly in higher rpms 2-3k? And also timing chains sounded like a diesel. Also something that you could easily hear while driving.

The video I took, the tapping is not as loud as the video makes it seem, in person. I can only hear it when hood is open and doesn't matter cold or warm. It really takes effort to hear when hood is closed, inside the truck w/ everything off and no background noise. And I can't hear it while driving, so I don't think it gets louder with rpms. I thought possibly a lifter or something but then again I really don't know. I hear it more defined towards the front, I guess near or above the valve covers if I get real close.

Also, the way you make it sound by checking if it's the timing chain tensioners as its a simple task? I thought it was pretty complex, am I wrong. Either way, digging inside the engine is something I'll have to take to a shop. I think I'll do another video and start it in the truck then start engine and followed by opening the hood- maybe will give a better understanding/depth of the noise.

Thanks for the replys and pls check back

 

[colintrax]

I'm using my phone so maybe the sound I'm hearing isn't even close. But it sounds like lifter tick to me.
Check your oil level, and when was the last time it was changed?

 

[just1me]

To check your tensioners you don't have to remove the valve covers, they are on the side of the head below the valve cover, they are what put tension on the timing chain guides to keep the chain tight. They look like this https://www.youtube.com/watch?v=P4N5E_RfYpE and https://www.youtube.com/watch?v=-LUdwhq-M3M

I haven't ever experienced the rattle, but I've read threads on here and watched videos about it, but if I heard anything that concerned me I'd probably check the tensioners first.

 

[Bobmbx]

Break out your stethescope and use it to localize the noise. An exhaust leak and a tapping lifter often sound alike, and often go away as the engine warms up.

 

[Kjhadfield]

I just read I'm wrong on saying lifters, on a sohc- not having them but rockers and hydraulic lash adjusters?

 

[Kjhadfield]

I'm using my phone so maybe the sound I'm hearing isn't even close. But it sounds like lifter tick to me.
Check your oil level, and when was the last time it was changed?

I think it's been like this for at least a yr if not longer, just can't remember. The oil level is good but I do need to change it- not because of miles but time. Last oil change was 9+ months but only 2000 miles and that was when I changed to synthetic, Mobil 1 full synthetic high mileage. The tapping has been since before the change so I know it's not directly because of changing to synthetic

 

[Kjhadfield]

To check your tensioners you don't have to remove the valve covers, they are on the side of the head below the valve cover, they are what put tension on the timing chain guides to keep the chain tight. They look like this https://www.youtube.com/watch?v=P4N5E_RfYpE and https://www.youtube.com/watch?v=-LUdwhq-M3M

I haven't ever experienced the rattle, but I've read threads on here and watched videos about it, but if I heard anything that concerned me I'd probably check the tensioners first.

I didn't realize they were accessible from minor dismantle (at least the front). Those videos were extremely helpful and even if I'm lucky that my tapping/ticking isn't related to the chain or tensioners- it seems as if it would be a good idea to change the tensioners as preventive maintenance? Only thing I noticed in the video is he mentioned the noise for him was only on cold start and mines seems to be constant cold or warm idle and the same pitch no matter the rpms (again it's not loud enough to hear when idle and hood is down).

Thanks again for your help

 

[Kjhadfield]

Break out your stethescope and use it to localize the noise. An exhaust leak and a tapping lifter often sound alike, and often go away as the engine warms up.

Funny thing is I bought a stethoscope a month or so back for this very reason and when I popped the hood to check I was greeted w/ a radiator fan that looked like it was going to shoot me in my face- so I replaced the fan clutch and it didn't seem as important at the time.

What parts should I focus on or is it basicly just trying to pin point approximate location it seems the loudest?

You say exhaust leak or lift "often" go away when warm, is the often mean most the time but not always because like I was saying mine doesn't get louder but it doesn't go away either.

I was hoping that this noise was just a matter of age and that its normal but I will look further to ease my mind until I can narrow down the likely and go from there. Thank you

 

[Bobmbx]

Funny thing is I bought a stethoscope a month or so back for this very reason and when I popped the hood to check I was greeted w/ a radiator fan that looked like it was going to shoot me in my face- so I replaced the fan clutch and it didn't seem as important at the time.

What parts should I focus on or is it basicly just trying to pin point approximate location it seems the loudest?

You say exhaust leak or lift "often" go away when warm, is the often mean most the time but not always because like I was saying mine doesn't get louder but it doesn't go away either.

I was hoping that this noise was just a matter of age and that its normal but I will look further to ease my mind until I can narrow down the likely and go from there. Thank you

An exhaust leak can seal itself if the gap is closed as the metal warms and expands. If the gap is too big to seal via thermal expansion, you'll always hear it.

For a lifter (lets call it 'valve train'), after the oil pump starts pumping, the oil acts as a cushion to quiet down the noise, and older hydraulic lifters can leak down until they are refilled by the oil pump and they are noisy as hell.

If you touch the valve covers with the engine running and can feel something hitting it, that not right. Otherwise, is just noise. You can try a thicker oil to try to quiet down the noise.