BMW N57 Intake Manifold Removed for Carbon Cleaning and Walnut Blast
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- เผยแพร่เมื่อ 4 ต.ค. 2024
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This BMW E70 30D came in with a rough running idle. Our first step was to read fault codes, which indicated multiple glow plug codes, and next is to check for Carbon build up inside the inlet manifold. I removed the boost pipe off of the throttle valve and found heavy build up. The Inlet manifold was then removed from the vehicle and cleaned in a sonic bath, and the ports in the cylinder head cleaned via walnut blasting. This carbon build up can restrict air flow, interfering with the tumbling and swirl of the air, and cause cylinder imbalances due to varied air flow to each cylinder. This combined with glow plug activation codes on all 6 cylinders produces a rough, stumbling idle - especially in a cokd start scenario. The glow plug module was also replaced whilst the manifold was removed, after testing of all 6 glow plugs showed no problems. After repairs were carried out, the vehicle performs as it should and idles smoothly. The DPF back pressures were checked after repairs to ensure correct operation and no need for the customer to return in the near future.
You are clearly an expert in your field , I wish more technicians was out there like you. Great job
Talk about perfect timing. I'm getting ready to do just what you have done. You seemed to be a lot like myself. If you're taking something off it's worth getting it back to 100% instead of just settling for doing what you went in to do.
I'd love to when you use your finger to move the flap so we can see what it should look like on that part you put your screwdriver on. I've never seen anybody use their finger to demonstrate if you have done it right or not.
I'm glad you mentioned not to use any sort of cleaner inside a throttle body. I buy that and brake cleaner by the box full.
I enjoyed your video so you got a big old thumbs up. Since you had some very good advice I made sure and hit the subscribe button also.
Excellent video. Not sure why you would want to put an EGR valve back on the car though, they destroy engines.
Great video, good explanations, the first couple of minutes was perfect for me until you skipped to manifold already removed :(. If you have more images during the removal process it will be the holy grail for me.
Haha, that’s exactly what I was hoping for when I clicked on video too, would love to see how the ecus and manifold was actually removed.
That is a excessive amount of Carbon Build up, this engine probably ran new afterwords.
very useful video thank you for detailed explanations
3k worth of diamonds in there 🤣
Haha maybe
That's not a throttle body mate. Diesels don't have one. It's an anti shudder valve
Its just terms differences only,but it work like throttle so…and it work not only like anti shudder valve,this throttle working sometimes with egr too…
Finally someone that actually understands modern diesels 🤣
Exactly
Great video, however we are 500km away from our nearest BMW dealer in Australia. Way too complicated for our local bush mechanic. Just going to push my wife's x5 into the back paddock for the chickens to roost in.
Never get another BMW.
Looking to do that same job on my 2013 X5 N57 40D engine when the inlet manifold gaskets arrive.
Retired 75 Y.O. mechanic but worth the challenge.
Just one issue is that walnut cleaning is not available anywhere near me.
Can only scrape out of the ports what I can.
What are your thoughts on spraying the ports with carby cleaner and sucking out what I can with the valves closed?
Hey, good video. Do you happen to have the intake removal on video too? Thanks
could you please give us the name of products and tools to clean up and how to clean the engine entries without getting cheats in ???
How did you perfectly clean intake valves with walnut blast avoiding any particles go inside cylinders.
They are blasted with the valves closed. All other ports with open valves are taped closed. The walnut blaster shoots walnuts into the port at high speed, but it is shooting it through a vacuum cleaner tip so as soon as it hits the ports it then get sucked out by the vacuum. It's a hard thing to show on camera in a video.
I'm just in the process of doing the carbon clean. I've unbolted the intake manifold but for the life of my can't get it to come off. Appears to be be stuck on the EGV valve/cooler that's bolted to the manifold which appears to be holding on tight. I don't really want to break anything - is there something I'm missing that's not undone? Any advice would be good. PS - All the pipes to it are disconnected, it's just where it connects into the block.
Great work , while you have it half apart….do you guys ever recommend replace timing chain while your there on cars above 100K ? I’m buying an X3 and considering my options..preventive maintenance so to speak. Cheers.
Hey. Whats the role of the yellow clamp from 10:07? Thanks
I've got a mini cooper Sd with an n47 2.0 engine, it all appears to be running fine with no active or pending error codes. Yet when I look at the MAF readings at idle they fluctuate between 0g/s and about 16g/s. This happens through out the rev range whilst driving, the only time it stays stable is when a regen is happening. Have you seen this before and do you think this could be caused by cylinder imbalance from carbon build up?
Diesel's also do not have throttle body. That is an anti shudder valve
anti shudder is only one function it is used for. it is used in egr operation and dpf regen and operates as a throttle plate in both these circumstances. it is not used as a throttle to control engine rpm speed, but it is used to throttle the engine in both the previously mentioned emissions operations, and it is not merely just an anti shudder valve.
Nice job man! DO you by any chance have info of how much exhaust backpressure (before turbochargers) is ok during full throttle acceleration of a n57d30t twin turbo. I am feeling that 4,5 bar at 2500 rpm is not good. After 2500 the car give up boosting opening wastegate and vnt.
How much do you charge for intake manifold cleaning roughly?
Do you have relearn it some how or just drive normal
Great Job... Congrats dude.
How much would this procedure cost on a 67 plate F30 335d XD? Mine has 66k on it....
Hi I have a n57 engine in a 5 series but will only run if I take off oil cap when I replace oil cap you can hear it suck hard and cuts out , any ideas? Tia
Hello!
Do you remember if in the fault codes that you found for this model was present P115d?
Thank you!
Very helpful video just would be great if u show how to take the intake manifold and the egr valve off too
I agree, however I don't have someone to film whilst I work so I can't really show live action. It's hard to film and work, and I get paid to do the job, not to film or share the video unfortunately. Thanks for your input though, and I'd love to be able to improve the videos in future.
Thank you sir!
After the clean up did it restore power ?
Hey mate.
Have you ever done a carbon cleaning on the 1.4TSI BMY engine?
Im suspecting my car has carbon build up and im thinking of doing som cleaing by my self
I want to do this job on my b47, but I am afraid I might mess up the ports part
Nice job!!!!
Lovely video, I know its alot to ask but can u perhaps show this on a golf 6 1.4 tsi?
If one comes in needing it then I will.
@@FourRingsAuto sounds good, ill be hoping for it!
Zuid kb the 1.4 TSI gets really nasty with all the carbon build up
thanks for your vid, but you really didn't demonstrated on how you cleaned the valves??
A specialist walnut blaster sold by bmw, vw and Audi. You can also use a soda blaster. Most people don't have access to a walnut blaster so seems pointless to show it.
Can you clarify how you cleaned the intake ports, ie the holes into the engine. I didn’t quite get it. Doesn’t carbon just fall into the engine?
Valves are closed.
Hi, guys, I have a 2013 bmw 3.0 twinturbo diesel N57. I replaced a coolant hose pipe. In order to replace this, I had to remove the manifold (+few sensors / lines etc).. now I’ve put the car back together, when I fire the car up. It takes around 5-7 seconds to start. It feels like it will fail to start, but always starts. Power is full. Drive is normal.. never had this issue before. (No engine lights) (nothing on code reader.
Any ideas what it can be ?
Thank you
Need to check rail pressure whilst cranking to see if there is an obvious issue. If they don't reach the desired rail pressure they won't open the injectors. Modern common rail diesels shouldn't crank for more than 1 second.
Hello, please are you have video step by step process, thank you
Was the piston positioned in TDC when cleaning with walnut blaster? I know the manual shows examples of actually spraying in the chamber but still wondering... If it was positioned, how can you easily tell its in TDC without seeing the exhaust valve? I presume given the timings one can look at the other intake valves ? Thanks
It doesn't matter if it's at tdc or not. You are looking directly at the inlet valves which you are cleaning. If they are fully closed, they can be blasted. Often multiple cylinders are able to be done at once.
@@FourRingsAuto Does make sense indeed. Thank you for quick reply btw!
How many miles / kilometres was on the car?
Can't recall exact kms but something like 150,000km. Every 100k they'll likely need a clean. I check them every service for build up.
@@FourRingsAuto my f11 is up to 173k so best I think about this 🤪
Great video and explanation. While I’m astounded the owner only complained of idle issues, I suppose if you don’t do many WOT runs, you can live with all that intake crud.
Computer controlled boost and power delievery can make it seem that the car has enough power still.
Pa koje godiste to kad pre uspe da zapece to sta sipas u njega preradjeno ulje
How often cleaning?
Have you ever done carbon cleaning on x6M e71
EGR's total bloody joke on modern motors.
Delete, no problems anymore
Not just the egr it's the direct injection as well because the fuel bypasses the valves
@@kungfuhustle6363 does anyone make port injected diesels? I'm pretty diesels are only direct injection.
Awesome job where u based? How much would cost that? I'm looking for someone to do it for me
Perth, Western Australia
i will change egr valve on the warranty from bmw. or not me but the workshop. My is model year 2014 520d F11. will they clean the way you did or will they just replace the egr valve
I don't know, I don't work for BMW. Plus it is down to what the technician there is like. I doubt bmw will pay to clean your intake manifold and ports to be honest.
@@FourRingsAuto Okey so when they change the egr valve the manifold will still be very dirty.. Sounds very bad. I think I must take my car to some workshop and fix that. Looks very nasty and bad for the engine
Hi mate great vid can I ask how do you close the valves while the engine is still in the car is it possible with a socket on the crank pulley. Cheers pal
There is a special tool that fits on the crank bolts on the front pulley.
@@FourRingsAuto cheers pal is it easy to turn over the engin
I wonder, does the consumption drops down after the cleaning? Cause it seems to be that it actually should
Fuel or oil consumption
@@FourRingsAuto fuel. I think it can not influence oil consum
@@FourRingsAuto Does it or no? I mean is there any reason to wash it in advance in case I have no fault or bad starts on car?
Rough running on cold starts. Effects dpf regeneration too. I'd imagine it may make it better on fuel but I'm not driving the cars more than a roadtest and they're customer's cars. They all agree the cars feel so much better a more crisper and better running. If it is full of carbon it needs to be cleaned. Why wait until there is an issue?
@@FourRingsAuto thanks for answer. Yeah dats true, but now it 100k km, may be gonna do it soon.
You can use Natron Lauge , than IT IS super cleean
Exelent content.
Thanks for watching and the feedback 👌
What’s this cost and how many hours does this take ?
Cost varies where you are in the world. About 3 hours removal and refit from memory. Plus sonic cleaning of the manifold. Walnut blasting was probably something like another 3 hours ish. So around 5 or 6 hours labour. You may get quoted more or less depending where you go.
Pointless doing this until you've completely removed and disabled the EGR system
why pointless? the carbon needs cleaning whether or not you feel the need to delete an emissions device that in some countries is illegal to remove from the vehicle.
I think it's illegal to remove the EGR in the UK where I live
hi where about are you based in a uk hoping to book my car with you please
Western Australia
Whereabouts are you in the UK?
Perth, Western Australia
Shame a little too far for a service call🙄
Can you put a catch can on an N57? Can’t find any info on kits or installation for one
Never fitted one myself, but likely something people do. It's a good idea as long as it doesn't affect the operation of the factory breather system and is is merely there as an oil trap.
Four Rings Auto I’d like to but concerned that it will throw up an error. In saying that I found my breather pipe was leaking and didn’t throw a code
Most of the gunk going into the intake manifold is due to the EGR which has to do with exhaust gas for which you can't do anything. Oil catcher could be in conflict with oil breather.
@@j.badinter988 The gunk is mostly oil from the oil vapour recovery system. The hot exhaust from the egr system cooks it turning into a black sticky mess. Remove either the oil vapour or the hot exhaust gas and it’ll run much cleaner.
What's the mileage?
Sorry i don't recall. They will be like this at 100k kms though. Worth looking up the intake every service.
@@FourRingsAuto thanks I will have it looked at. Mines on 60k miles so it's probably due a clean.
Where you boys based please?
Western Australia
Nice video. I’ve got a Mercedes E350CDI with 125k miles on the clock. Occasionally it takes a several s seconds to fire when started, I wonder if this because of a build up of crap on the internals?
Could be, but the om642 engine relies heavily on the glowplugs for fast starting, and good battery condition. I'd start with these basic checks before looking further.
Four Rings Auto cheers bro and thanks for replying. Where are you guys based?
Give the glow plugs a chance to heat up. Easy to forget diesels need a proper chance especially in winter. BMW’s are programmed to run glow plugs longer depending on temperature.
Allie sometimes it does it on the hottest of days so I’m not sure if it’s as simple as glow plugs. I’m not sure if this is connected but I’ve just had a new fault code and replaced both Nox sensors, and it hasn’t hesitated since.
last few times, my mazda 6 2.2 cdvi was starting slow, also took a second or sometimes 2 to react on the throttle pedal input. Is in the garage now and looks the same in carbon build-up. 100.000 km on it
Whoever came up with the concept that recycling exhaust gas into the intake was a good idea should be made to eat 10% of their own shit with their food and then see if they think it is a such a good idea.
It's actually a good idea. As long as the oil vapours from the crankcase breather does not end up in the intake too. But they do.
@@mcplutt- I own a BMW 335D and the EGR system led to massive carbon built up in the EGR valve and the intake manifold. Reduces emissions by a minimal amount and results in a $1000 cost to walnut shell blast it clean. Needless to say my car no longer has the EGR system installed.
こんにちは、こんなにひどくなるには走行何万キロ走行ですか？
Is this video an advertisement for a service you provide? If it’s informative then where is the information? You don’t show anything. You do some talking show dirty parts then clean parts. What exactly is the point of the video?
That doesnt look like an m57 dude
No it's an N57 as per the video title.
From a 4.0d E70 I guess?
Are in you in UK?
No. Western Australia.
Where did you get the sonic clean done?
Head rebuilders did it for us.
What does the sonic clean use in the bath? What liquid please?
@@richardsaunders5547 it's special sonic cleaner. You can buy from amazon.
blablabla
ok