Jasonoff

It's actually all 3. Depending on the video you can hear one over the other. If the lifters are quiet (which in a few vids they were) you can hear the injectors.

The most recent video it was predominately lifters. Bleed down happens and that lifter sound is a byproduct.

The guy chiming in about rod or crank bearings just seems inexperienced with the "normal" sounds this engine makes.

I had completely fùcked crank bearings in my blown S2000 engine and it was as quiet as a mouse idling. Noises can't be applied cross platform like that.

I can post pictures of another engine as well. Doesn't apply to this one...

tompen2405

Ok than there are 2 possibilities.

1: replace the lifters again and soak them in oil before install.

2:replace the complete Head (problem with oil supply to one or two lifters).

BUT
If the lifters are getting less oil the valve isn´t working on his full "workspace" and then there are more problems with less power, check engine on ect. Or I´m wrong here?

Also i couldn´t find abnormal wear in the head or at the cams/ lifters when opend the engine first time.
Which should be the thing, if there was an problem with oil supply, or not?

Tomek63

You re right I dont have expirience in this engines but I have ML 63 with 90 k miles and it sounds like this:

https://www.youtube.com/watch?v=dDHMFQmytYw&feature=share

tompen2405

That one has no strange ticks, only normal injector sound.

Tomek63

Tompen You re from germany and I am grom Poland. I have a lot of cars with high bhp and I have a very good service. If You want to diagnose Your car and dont want to spend a lot of money in AMG service You should come to me.

Jasonoff

Does the sound in the below video go away once warmed up (~80°C oil temp)?

tompen2405

No its stay with oil temp.

Think also with warm engine it is a little bit Louder.

Once the Engine gets high rpm (red line ) iit is a little bit quieter but some time at idle its getting louder again.

Jasonoff

The lifters shouldn't tick like that once up to temp. They should prime and hold pressure.

Once and a while on a cold start (after your car has been parked for a while) because of bleed down depending what oil you use is common.

Pull your valve cover and check for excessive wear. If it's always doing that it's not good for the cam lobes.

tompen2405

Yes I know.

But i´ve checked the camshafts and lobes for unnormal wear when changed the headbolts.
Evertyhing was fine, no excessive wear visible.

And I think the previous owner drove the car also with that sound.

Maybe I should follow one advice to soak the lifters before install.

He had the same problems after a head bolt change.
Got also new heads on warranty because of worn out cam lobes after 1.000km (after the HB exchange at a mercedes dealer)

They bulit together the eninge with new heads, camshafts, lifter, timining chain, cam adjusters but the noise stayed.

After that they order 32 lifters and soak them 2 days in oil before assemble.

His engine is now quiet.

I asked many people in germany but all told me that this isn´t the problem, becaue the lifter fill with oil at the first startup when there new, so no need to soak before.

Don´t know whom to believe now.

Jasonoff

If they've been making noise like that constantly since the install I'm suggesting to check them now for excessive wear.
I'm not sure if you're understanding the problem. Do you know how hydraulic lifters work?

tompen2405

"If they've been making noise like that constantly since the install I'm suggesting to check them now for excessive wear."

I had the noise BEFORE replacing the HB.
Bought the car with a front damage and drove it after i fixed the front.
Than i noticed the coolant loss.

Opend the engine and found weistec headstuds from the previous owner (canada).

Think they had coolant loss in the past, but because the put sealant between headgasket and block the problem came again.

Now the heads are grinded and assembled with the original head gasket and headbolts (original)

Jasonoff

Man, you are all over the fkn place in this thread. I can't even follow it anymore.

Why didn't you just lay everything out in the first post so it's easy to follow?

Can you answer my questions in the below format please?

Answers

1. Answer 1
2. Answer 2
3. Answer #...

Questions:

1. This car had an unknown noise that followed RPM from day 1 of your ownership?
2. Started consuming coolant and upon repair you discovered it had ARP (weistec rebranded) studs?
3. You pulled the head, machined the surface, then reassembled with OE parts (bolts and new lifters)?
4. Post repair, it still had the same unknown sound (multiple videos posted of it sounding normal, one or 2 with the lifter tick)
5. Although some videos have absolutely NO lifter tick you say it makes the lifter tick all the time?
6. Why TF didn't you reuse the 10000x better ARP studs?

tompen2405

Answer 1
Yes

Answer 2
Right

Answer 3
Yes new lifters and one cam adjuster, also chain tensioner

Answer 4
Yes, the sound didn´t change-
AGAIN the sound at idle couldn´t be heard so good at the videos, but at rpm you hear at clearly when the window is open and on the recordings

Answer 5
Bad quality of recording, at rpm it is heared at the video very well.

Answer 6
Don´t want to pull the complete engine, also the previous owner used not all washers (some are missing)

Best would be to found the previous owner and ask him what they did with the car.
But I think thats nearly impossible

First owner came from Ontario
The second and last owner (since 02.10.2015) from Quebec.

I bought the car in 09/2016 in Germany, imported without german paperwork.

Jasonoff

Re 4 & 5: Sorry man, some of those videos did NOT have the bleed down lifter issue sound. It is VERY loud, you can't mishear it.

Re 6. Wow that's sketchy. It's possibly coolant was escaping into the valve cover through the bolt and not the gasket?

tompen2405

Re 6
Yes could be, now everything is fine.

Drove since my repair 1.500km the sound is from times to times loader, than quieter.
But NEVER went fully away.

Mercedes dealer told me everthing ok, until a revved the car.
Than they said check the camshaft adjuster.

But the adjuster are all locking, also have latest partnumber.

Noise can be heard from the intake both sides (mixed with injector noise), but when you listen carefully you hear it from the left front wheel (think exhaust camshaft).

Jasonoff

It's a flat tappet design, it's supposed to make some noise which is what you can hear in some videos. The very loud noise in your most recent video is when the bucket isn't fully pressurized caused by bleed down.

tompen2405

But this can´t be normal:


It its not my car, but it sound exactly same.

The owner of the car who recorded said to me that the sound from the video is gone after 10km.

Mine stays.

chrisridebike8

^^^that is lifter noise which is semi-normal. The reason it goes away after 10 km is because the pil pressure has built back up into the lifter.

Jasonoff

I don't think you're grasping how LOUD that tick is from video of someone else's car.

The videos of your car actual car you posted was NOT the same sound.

Your car is fine. Just drive it already...

tompen2405

Guys i know lifter noise is normal, but it should go after the car is warm.

My car has the sound at every time.
Cold less than warm.

Jasonoff

Post a good quality video of your car making the extremely loud lifter noise (as distinctively heard in the "M156 tickerin" video) when it's cold and when it's warm.

Of YOUR car, not someone else's.

You say your videos are poor quality and relate what you hear in person to what it sounds like in a video of someone else's car. We've established the audio in a video is far less dramatic than in person. All the evidence points to you confusing what you hear in person to what you think it sounds like in a video.

tompen2405

Did a longer video today.
Car is warm, after 40km drive.



and

Jasonoff

Sounds fine other than a noisy accessory.

10000% for sure not the lifter bleed down sound you're claiming...

Edit: Hear the difference between your video and these?

chrisridebike8

OP, your car sounds pretty normal to me. I agree with Jasonoff.

BLKROKT

I hear something. But it's impossible to diagnose what the problem is from the dozen videos you've posted over the past month. Could be a number of things, all of which have been suggested here. In that time, you could've taken it to someone who knows what they're doing, and had it fixed by now.