Engine won't turn over after replacing lifters
https://imgur.com/AlpoeSa
At this point it almost feels like I have to use the wrench on just one cam to get the two to line up. I know there has been a ton of debate in this thread and some people saying absolutely do not use the wrench on the cam (while the adjusters are still installed and tight). But I'm not sure what else to do. I just can't seem to get the tools installed using the crank pulley only.
He may have already messed up by torquing down the cams with the tool in place (cams at 40°) and the motor NOT at 40°. I'm just trying to save him some time by doing something "not by the book" that will work. The cams and motor may be slightly out of sync, lock one in place and move the other to put them back in sync. I'm suggesting to lock the cams in place and move the motor.
I don't understand what's so difficult to understand.
- Set the crank at 40°
- If the cams are way off and tool doesn't slide right in, slowly rotate the crank in the direction it needs for the tool to fit.
- Bolt down the tool
- Unbolt the adjusters so the cams are decoupled
- Put the motor at 40° (it likely won't be off by much)
- Install the timing plate
- Re-torque the adjusters
If this car was in my garage I would have had it sorted faster than it has taken me to write all these posts...
https://imgur.com/AlpoeSa
At this point it almost feels like I have to use the wrench on just one cam to get the two to line up. I know there has been a ton of debate in this thread and some people saying absolutely do not use the wrench on the cam (while the adjusters are still installed and tight). But I'm not sure what else to do. I just can't seem to get the tools installed using the crank pulley only.
Is that pic with the crank at 40? If so, exhaust is off quite a bit.
You can put the wrench on it, loosen the adjuster and move it so the rear bar locks it in place.
When you say put the wrench on it and loosen the adjuster - I can't do that. I can't loosen the cam adjuster until the timing tools are installed, right? And I can't install the timing tools due to the problems described.
edit: Just realized you may be saying loosen only the one adjuster that is out of sync, and wrench that one until it fits in place.
Last edited by jaspirr; Dec 4, 2017 at 10:15 PM.




When you say put the wrench on it and loosen the adjuster - I can't do that. I can't loosen the cam adjuster until the timing tools are installed, right? And I can't install the timing tools due to the problems described.
edit: Just realized you may be saying loosen only the one adjuster that is out of sync, and wrench that one until it fits in place.
Sorry man. I was hoping you could save some time.
This time make 100000% certain the crank is at 40 when you set up the cams. Lesson learned.
The Best of Mercedes & AMG
I don't think I'm way out of timing. I currently have three of the four timing tools in place. I have the timing tool on the top/front of the cams - flush in with both cams. I have the back blade installed into one cam (the top) but it just won't slide into the back of the second cam. Seriously makes no sense. This thing is so close to aligned.
By the way, the crank is at about (edit) 39 degrees with the timing tools in place.
Last edited by jaspirr; Dec 5, 2017 at 07:25 AM.
Either way, you know the process. Just do it right this time




I think getting that back timing piece on the back of the cams is extremely difficult because everything is under tension/pressure still. It's much easier to do after removing the cams and doing an install.
Last edited by jaspirr; Dec 5, 2017 at 07:25 AM.
Last edited by go team; Dec 5, 2017 at 02:18 AM.
I wanted to do one last check before starting the engine so I removed the coolant cap to check the level. As soon as I remove the coolant cap, coolant comes gushing out from the aforementioned spot - front of the engine block, above the crank pulley. I tried to diagnose it by feeling around in there and I found the problem. This plastic coolant connector snapped off. All my coolant is now slowly leaking out from that location.
https://imgur.com/GvytCKD
I think I just bumped into that part one too many times while working with the crank and the pulleys and such. I assume it's just a cheap replacement but obviously I can't start the car with a broken coolant line. Anyone recognize that part?
i believe it's a part shown in this picture. It's the black hose right in front of where the number 2 arrow points. It comes from the left and plugs into something in there.
https://cimg2.ibsrv.net/gimg/www.mbw...1c25e356a0.jpg
edit: I found what it is. It's a vent hose. Mercedes part # 2045000372. Shouldn't be too difficult to replace. Can I just remove all this EGR-type stuff on the top front of the engine so that I can see down there?
Pic of hose: https://dz310nzuyimx0.cloudfront.net...d92df5c81b.png
Last edited by jaspirr; Dec 5, 2017 at 10:48 AM.




https://imgur.com/4HAnfNX
I think we're talking about slightly different things. I understand where your part probably broke and how that was fixable by clamping a hose over it. But mine broke at a different part - the part that screws into the engine block - and can't be fixed with a hose clamp.
If it broke at the green part, I could just clamp over that. But mine broke at the red part, half of it came off and half got stuck in the engine block. So I don't need a new hose (the green part) I just need this red connector. Can't find any part number or anything for this connector. Ugh.
Last edited by jaspirr; Dec 5, 2017 at 01:15 PM.




https://imgur.com/4HAnfNX
I think we're talking about slightly different things. I understand where your part probably broke and how that was fixable by clamping a hose over it. But mine broke at a different part - the part that screws into the engine block - and can't be fixed with a hose clamp.
If it broke at the green part, I could just clamp over that. But mine broke at the red part, half of it came off and half got stuck in the engine block. So I don't need a new hose (the green part) I just need this red connector. Can't find any part number or anything for this connector. Ugh.
Huge thanks go out to everyone who helped me in this thread, notably Jasonoff, AMG3.2, go team, ec_nova, jptaylor, and the others.I was "100% certain" I had done the timing perfectly and everyone quickly proved me wrong. It was my fault for never checking the crank pulley after setting it once.
Most importantly, thanks to Mercedes for making a clearly defective engine part and refusing to own up to it so that people out of warranty like me have to go through all this crap.
Honestly it was fun, getting to go through this extremely complex engine and seeing all the high quality parts they use. This engine is a work of art.








