I had this job done a couple of weeks ago (leak was just a slight weep though) - it was picked up at a routine service. Turbo was OK. 167k on the clock. Hopefully it’s going to last a long time now! Great video, by the way - liked & subscribed 😀

Hi, great, first video I have found with the same surging, I seem to have this fault, is there a way to check the turbo itself to garentee it is at fault? I have the surge I have the pressure code and no eml. I must say though it is intermittent, doesn't do it every time you floor it, 50% maybe but it only happens on full send accel

@@mikejennings7779 you should have an exhaust back presure sensor, i would change turbo, back presusure sensor, and inlet motoro in one hit to cover a few common faults at once.

Did mercedes resolve this issue re the oil cooler seals and if yes when? Thinking about my 2012 R Class

@@user-bj1gi2rv9rI’m looking at a 2011 - 2013 R Class right now, any good?

Well done charlie! The GL is one of The hardest ones Aswel with access, well done buddy all the best

Thanks 👍

More to come!

I have an OM642 in my C207. But I really miss the sound of the OM648 from my old W211.

@@martynm.449 older engines just had more character

@@G20Details is that your CLS? Beautiful.

@@martynm.449 yes it is thank you very much, this car actually goes to SPR for most of its work

Thank you very much! Hopefully we will keep growing.

No way. The Inline 6 CDI was the last great Mercedes-Benz diesel. The V6 diesels suck.

@@closer71 why is the V6 the bad engine? because it is compact inside some cars or what? The inline 6 did have some issues right?

@@MoesKeckeEcke Because he's parroting internet stories. The v6 is more sensitive to bad maintenance compared to the older i6, that's true, but that's about it. It's only issues are with the oil cooler and the flaps getting stuck, but the flaps can be cancelled with a resistor and the oil cooler can be kept an eye on. I've seen fleets of sprinters with this engine, all around 650-800k km and still running. Some oil leak here and there, but still ran strong. 1 went over 1 mil km before being finally retired, but not because the engine was bad, but because the truck bed and inside the cabin was getting really worn out.

Sorry but I had an E320 Bluetec with the 642 engine and it was dreadful. In the span of one year: New swirl motor (twice) Oil cooler seal (twice because the dealer screwed up the installation) New turbocharger Three new fuel injectors New motor mounts New intake manifold Numerous oil leaks. Car was serviced at the dealership at the correct service intervals. They never did fix the real problem. Car ran fine until you needed to accelerate to get onto the interstate and the car would go into “limp home”. Twice I almost got killed by a semi truck. Best engine? Nope!

@@em4703 No. it’s because I own two. An OM617 and the 2005 CDI. Smart ass. The V6 is a piece of shyt.

an the big red seal that is on the Y to the turbo snail.. also usually a seal that gets hard or unsealed... not too bad this engine

Thank you very much, really nice of you to say. All the best and thanks for the sub 🙏

Welcome aboard! And thank you. 🙏

Thanks, will do!

I don’t think we will ever do diy videos I don’t have the time to do step by step 🙏

@@sprautos i see, that's a shame. you with the attention to quality work and method of explaining would make great such DIY videos. But more videos like the one you already did (the 52min) doesnt that count as DIY?

Why buy a diesel car they are most unreal able cars and everybody with anykind of brain knows did .petrol cars the way to go.

Glad you enjoyed it

I try my best to I don’t know how much longer I can keep it up though 😂🙏

M112 v6 petrol was a tank. 272 was ok. Yes I’m not a v12 fan either. Sl 72 is something very special though. R129 with a m113 v8 is the best combo in my opinion

@@sprautos My straight 6 Petrol has been bomb proof as half of V12 used in many other cars.

Great little work horse and mpg

@@sprautos C220 CDI. As a petrol head, the dpf thing makes me nervous. Hopefully it won't develop any issues.

You will be fine, premium fuel now and again. Treat it to a JLM diesel extreme clean once a year.

I'm glad I've got my W204 with the OM646 which seems to be bit more bulletproof than the OM642. Would regular oil and filter changes help with the OM642 or are these just inherent fualts?

​@@sprautosthanks for the advice. Much appreciated.

C32 rare underrated car. I don’t know about over there but here there cheap as chips

Glad it helped

What’s the pros of deleting the swirl flaps?

You don’t need one to be part of our channel buddy. Welcome 🙏

Legend!

Glad you enjoyed it

Yes we replace as we go. Haha we do all sorts don’t we that go unnoticed. But it’s a nice feeling for us when it’s back together knowing we have done what we can to make it the best we can.

I’m really not sure, I’m Presuming it was emissions related, the v6 cdi was a nice smooth torquey engine. I wonder why they move on from many engines at times 😂🙈

If the chain starts to stretch you will get a rattle on start up lasting around 3 seconds. There isn’t an interval the chain but when it rattles that it letting you know It wants a new one. Oil cooler hasn’t really got a pattern. I’ve seen it happen at low miles and also not leak until high miles.

While you are in the "Valley of Death" the injector seals can be done. The seals from the Honda 2.2 diesel are the same size but do a better job than the Mercedes ones as they are slightly softer and seal better .

Well done, there not easy on an r class, it’s probably the hardest one along side a Vito. So well done, plus you’ve addressed loads of other issues.

I think if I needed a 211 as a workhorse car yes I would probably go for the 646 engine 4 cylinder diesel, its not going to set the world on fire 0-60mph but it will tick along all day with less issues. And is actually a pretty smooth engine.

@@sprautos Thanks. Its so difficult to resist the temptation to go for a smoother, more leggy 6pot, despite the legacy oil seal issue.

The list is to long 😂 if you search the web there are lists knocking about

Some do. Some don’t 😂 we try.

I personally prefer to just fix it properly, I think the delete is ok for a temp fix if your short of funds. Garages wouldn’t supply any warranty with the resistor mod. So it all depends what you want and what the customer expectations are I suppose. Yea always bang a ltr or so down the filter housing helps stop a dry start.

@@sprautos Thank you, i appreciate you answering my questions. This engine is really well suited to the Grand Cherokee. Plenty of low end torque.

Yea good chance it’s just the actuator. In our case we wanted a full turbo because of the high mileage of the car and to supply a good warranty

This job would cost you £1500 without the turbo, more towards 2.5k with a new turbo.

I have the same engine in my 2012 w204 and I believe it needs the valve stem seals replaced, how much extra would it cost, and do the heads need to come off to get to the valve stem seals. Thanks for the great video.

It’s a great engine plenty of power/torque I would like to think so but time will tell I suppose.

@@sprautos absolute Merc fan. Not feeling the love for everyone/hybrid ones at all though

I believe that from 2010, Mercedes started factory-fitting the new upgraded (purple) oil cooler seals to all new OM642 engines, so you should actually be ok. At least with the oil cooler problem described here!

We do the best we can with the time we have. If we cleaned everything until it looked brand new it would double the labour.

Oil cooler job without turbo is about £1500

Yea used to do a few of those back in the early 211 days. Think I still have the test kit to test the trans fluid

@@sprautos The only time that I have ever traded in a car knowing that it had a fault - to the dealer that sold it to me 18 months earlier. That 2003 E class was the most unreliable car that I have owned!

Haha it is good your right. You get a nice feeling knowing you’ve saved a good few quid

Repair kit if off eBay, you won’t know till you strip her down I suppose. If it’s a judder like in my video could be turbo

@@sprautos Do you generally rebuild the turbos or just buy a new one? I've taken off the shield before while installing a new actuator, can the turbo be removed from the top or is it a pretty significant tear down? I have an autel that can test some subsystems I may play with that to see if I can confirm it is the turbo acting up unless there is a simple mechanical way to activate it manually that you recommend.

😂🙌

We are going to put it on our webpage soon

First off sorry to hear that about your grandad. And good on you for wanting to get the car back up and running. It’s very difficult to say without diagnoses and investigation but hear is what advise I can give you. Abs sensors have to be genuine, Mercedes don’t like none genuine sensors and I’ve never had any luck with them, make sure you buy from mb dealer as there are lots of fake on eBay. On the front wheel bearing there is a seal which is also the abs pick up ring that can go faulty if the fault is still flagging on that same wheel the sensor was fitted,our SLk video we did will help you with what I’m explaining. SBC pumps can and do go faulty and yes do have a shelf life. With SBC faults you usually get service brake visit workshop in white on the dash or red staying stop vehicle with massively reduced brake pressure. It really needs to be diagnosed and some Time spent with it to pin point exactly but hope this may help. All the best 🙏

All 642 c6 cdi all suffer the same at some point

It cost about £1500 I would do it when it needs it. I’ve got cars with over 150k and still Dry and yet others at 100k and need doing, there is no pattern to it really. To get as bad as this one it’s taken years being left and ignored.

Clean the mass air flow/flows maybe? It worked for me :)

We have some set price 642 jobs on our website that will help you.

@@sprautos Great Thank you.

😂

Star motors Leicester 🙏

@@sprautos you are a star!!!

Exactly the same car and same issue on my 320cdi. But my chap had no clue and fixed the Gearbox (

You could try just an actuator if you wanted. It was more cost effective for us to replace the whole thing plus the turbo had done 150,000 miles. So depends if you want a long term fix or not I suppose

@@sprautos Thank you so much for replying - I really appreciate it, your channel is so helpful.

648 was a beast.

Well it won’t all be a waste as if he has replaced the back pressure sensor we would have recommend that also anyway. Good on him for Giving it a go. And it caught me out the first time also.

I haven’t found a pattern tbh, I’ve seen it at low miles and also high. So I would say it can happen anytime.

​did mercedes fix the oil cooler seal? If yes at what year? Thinking of my 2012 R class

​@@user-bj1gi2rv9r the newer type (Viton) seals were fitted on cars after 2010 but as previously mentioned they can fail. My previous Chrysler 300C with the OM642 engine had no problems but I have had to change the seals on my 2013 S Class with the same engine. Thankfully Mercedes didn't fit the dreaded swirl flaps in all the OM642 motors. My

I dont know why they put them in but I’m sure it would be better without. Lots of people remove them.

@@sprautos that was my point can i remove them .thank you for good video