Mercedes Benz M112 and M113 engines, split intake manifold vacuum hose leak fix

[@irllife5160]

This will help so many people... goto the Mercedes Benz forums and post this link... amazing!

[@davidgreen2038]

I used an air compressor pinch hose fitting with an 1/8” pinch. Then added a hose connection , put a 1/8” rubber washer. This pinches onto the vacuum tube in the intake, making it air tight, sell the washer seals at the exit hole by way of the pressure of the mounting screws and gives the ability to replace the hose in the future without removing the intake. I would add a picture but not sure how.

[@ericmobley3266]

Yea would be great with a picture or video. Way to go.

[@jesseflowers3523]

My 2001 s430 is experiencing ruff idle . I was replacing the hose there and it broke off . I refused to take the intake off but it was a no go . I’ll have to take it off today . And finish the job . Poor car has been sitting for about a month because of the bad weather in Nashville . But this video motivated me . Our I go

[@gearhead3500]

I actually broke actuator level from the inside I went to my local junkyard I got lucky I found another good working intake manifold for 60

[@xozindustries7451]

Good idea, bad execution on Mercedes part. Nice job on the repair

[@Davidson-007]

The hose that leads under the manifold on my sl320 looks to be wet like it has a leak , will that be where I would have a vacuum leak ?

[@thelongranger55]

Just the video I was looking for . My vacuum line broke just like yours long before I took apart my intake manifold I can just tell by the look of it , what were your symptoms with the broken hose ? I never noticed anything but I’m sure I will when it goes back together fixed & clean , I scrubbed everything clean with diesel fuel & then soda blasted it down to bare aluminum again so I can get better sealant adhesion. I will have a video on my channel soon when I’m done !

[@wotracer49]

It was a lean code with a small hissing noise from under the intake. It did run much better when it was all done

[@piotrbazydo6150]

This could be solution of p0171 and p0174 engine fault code?

[@wotracer49]

Yes, running lean because of a vacuum leak is very common

[@giorgi2935]

Hello This is great video and could you tell me does this hose cause check engine light?

[@wotracer49]

Yes, it is often a lean code, it also makes the other components that use that vacuum to not work properly

[@giorgi2935]

@@wotracer49 Thank you very much, I had rough idle problem for 5 years and when I saw this video I checked everything and I found 2 melted hose, they were coming from crankcase, I changed them and check engine light and rough idle went off , this video was very helpful for me

[@migohend2738]

What size are those 2 hoses

[@matimati3530]

Did you figured it out?

[@youngjung4361]

3.5mm id

[@felipemiranda4296]

Good Day to every one I am just curious to know what kind of motor oil has been used in this automobile and also what brand name of gasoline. If is that possible how many miles or Km has this engine. Would like to thanks Mr Lambson Auto for the video

[@wotracer49]

Not sure, it's a customers vehicle

[@jlk6812]

What are the size of those 4 screws that mates it when you sit it back down on the silicone ribs? Thanks!

[@wotracer49]

Sorry, I don't remember

[@garyquist2587]

Great video. Can you be more specific as to what sent you to this hose as the problem to the lean burn. Were there DTCs? Rough idle?

[@wotracer49]

I could hear the vacuum leak, hissing at me. It did have lean codes that were fixed

[@abeodez751]

@@wotracer49 what was the code and all cylinders on one bank are missing 1-4 on 02 s500 What is most likely the cause?

[@wotracer49]

@@abeodez751 sorry, this would not cause that problem, you will need to get it diagnosed

[@jlk6812]

@@abeodez751 highly unlikely that many misfires on that many cylinders at the same time. I had similar issues o2s Cls500 M113 of course. Turn out MAF wasnt clipping down tight. I fixed and scanned again and got a ("this vehicle has no codes.")🙃🙂 All this was after spark plug and wires and a new coil pack pulling and testing the o2s! All was checking out good. I pulled my hair out until my eyes hit that little tiny chrome clip. I wiggle the MAF and it was moving quite a bit! That was my Eureka moment! Lol! She runs like a beast now!🤪

[@nickcsuki8123]

What does this hose do? I'm planning on an EGR delete. Does this render this vacuum connection useless?

[@wotracer49]

I fixed it so the vacuum line wasn't leaking,, it still has vacuum on that hose

[@Davidson-007]

@@wotracer49I think my sl320 has a leak on that vacuum hose in same location , what does this affect with the car’s performance?

[@firstpersonjay5655]

What size hoses did you use to replace both of them that you took out ? I have a 05 e500 I’m looking to take off the intake manifold I’m interested to know the sizes

[@wotracer49]

I'm sorry, I don't remember. I just matched them up to work. 👍🏼

[@eyalbarmitzvah]

How much do you charge for this service?

[@serenesoundsx8027]

What codes were u getting and how was it running before you fixed it, please tell me. I have a 2001 s430 and I can’t for the life of me figure out why it runs like crap BUT I did try to repair that vacuum. Maybe I did it wrong

[@wotracer49]

It was running lean, vacuum leaks do that. You probably have a different issue

[@MoeHawk94]

Hey so i accidentally destroyed the orange rubber flap at 2:20, any idea what that flap is for?

[@mufdvr9730]

Check valve

[@dekson7727]

thanks for help and greetings from Poland ! :DD

[@jasonst5688]

Did the car show any faultcodes or something? Or did it have bad idle?

[@wotracer49]

Vacuum leak and lean codes

[@migohend2738]

Bad idle to I think. mines the same I have to do this method asap

[@humbertor17]

Will this issue give me a crazy "supercharger whine"?

[@alandarwishi1237]

How many hours does this job take?

[@wotracer49]

It took me 2.5 hours...but I have experience with auto repair

[@Kevykev0]

Would this cause a oil leak as well? got p02015 p1073 and p1070 codes, high rev at cold start with small oil leak. Think

[@wotracer49]

No, oil should not be in the intake manifold. But an oil leak can ruin this vacuum hose.

[@unknowngrower3103]

What a smart dude… thank you so much

[@clk5005]

That part broke off on mine the one in side the intake so i just ran the hose in side with out the connection will i have problems? I drove it today everything feelt normal

[@wotracer49]

Like they say "Only time will tell" 👍🏼

[@clk5005]

Now is running a bit rough guess a need a new intake manifold

[@karlsabo5104]

Perfect! Exactly what I needed! 👍🏻

[@bluedemon7601]

Can those flaps be canceled?

[@wotracer49]

Not sure if it would cause issues/ check engine light, probably

[@bluedemon7601]

@@wotracer49 thanks. I actually used your video to fix that same issue on my C55 AMG intake. Thanks for the video.

[@benpatterson5081]

@@bluedemon7601 what was your indication that this was the problem? My C55 is giving me P2017 codes that come back after clearing.

[@benzodiy4053]

Totes to you for having a cl500 me with and clk 320

[@dropworld922]

YOU BETTER TAKE THIS TO THER FORUMS,I NO SOME GUYS WERE DOING CRAZY STUFF TO KEEP IT ON,I GOT MINE OFF NOW, FOR CLEANING MY EGR VALVE WAS CLOGGED I BOUGHT IT VERY NASTY AND IM WORKING ON IT TO GET IT LIKE NEW AGAIN, IF YOU DONT MINE ME ASKING WHAT SIZE HOSE DID YOU USE AND WAS GETTING THAT LEAK TO LINE UP A PAIN OR CAN I MARK IT WHERE IT WAS AND DO IT LIKE THAT ???SORRY FOR THE CAPS I LIKE TO WRIGHT LIKE THIS "LOL"

[@ericmobley3266]

JUST SAYING I LIKE CAPS ALSO...

[@ANDERZENAMG]

GREAT Video!!

[@hansherrmann6353]

Thank you!

[@bravothedog]

Thanks Bro !

[@FrankyFella]

Nice thanks….

[@pattyshobbyworld2851]

I'll stick to coloring... Nice Mercedes.. manifold.. whats that LOL.

[@exceptionallife4768]

Who told him It was clean... Carbon gunk everywhere

[@jkhan856]

How much do you charge for this service?

[@wotracer49]

I don't do this for other people's cars anymore, I'm a teacher now

[@jkhan856]

@@wotracer49 was the intake issue resolved? Did opening the intake manifold up and resealing it cause any leaks?

[@wotracer49]

@jkhan856 yes, if you take your time and do it right, it will fix the leak. No more manifold leaks 👍🏼

[@hansherrmann6353]

Thank you😊

[@mohsenansari1913]

Thanks brother 👍🏻🌹