Troubleshooting BMW B37 116d F20 LCI Startup Noise

[@el_semir]

it’s how this engine works

[@nemz7505]

There's a few potential issues with these... 1# The crankshaft pulley can become mishaped which causes the tensioner to bounce on idle. 2# Sprag clutch pulley on the alternator, designed to take the bounce out of the belt (examples of sprag clutches on youtube). 3# Tensioner has failed, this is probably the least likely scenario but DIY's often change this first which makes no difference. 4# Contaminated or worn belt.

[@moncefmansour4619]

Great job , Bravo

[@dadinechannel4720]

I agree with Mr Toreto the belt and the hole distribution must be changed

[@dadinechannel4720]

I mean the whole distribution 😁😄

[@cleggy2009]

Nice video 👍

[@xMrRasec]

4:43 superbock? assim sim

[@Jo-hannson]

If you don't have one, put an alternator freewheel in, solves this kind of problems

[@BlahBlahBleh317]

Have you tried it in this engine? I might give it a shot if it ever happens again, but I'm counting on it never happening again hehehehe

[@Jo-hannson]

@@BlahBlahBleh317 yes, a customer of mine, had the same problem with this engine

[@BlahBlahBleh317]

@@Jo-hannson Nice, thanks for the tip!

[@piovo1]

Freewheel alternator? Where can one find that

[@Jo-hannson]

@@piovo1 alternator Clutch , INA does make one for this car, but depends where you come from, I guess

[@Giorgionememe]

Thank you man

[@momer54]

Nice vid, I had the same problem with my 116d, but the noise happened only in hot summer days. Luckily BMW repaired it without charging (something called Kulanz here in Germany), however, if I remember correctly, they have changed the ac compressor.

[@tonybb2522]

It's the same with me, it only squeaks in the summer or in warm weather. at BMW they change tensioner, damper pulley and belt twice. After a few days the belt squealing starts again. I also thought about the a/c compressor but since it works fine i thought it was not the problem. Did the problem go away for you after the change?

[@Michal_Silski]

@@tonybb2522 I have the same issue as you. It seems the noise happens only when there is really hot and it lasts for couple of seconds after startup. Did you managed to solve it?

[@tonybb2522]

@@Michal_Silski I couldn't solve it. I don't know what else to do.

[@Michal_Silski]

@@tonybb2522 Thanks for your replay. If i manage to solve it I will share the solution. ;)

[@tonybb2522]

@@Michal_Silski You're welcome my friend, if you also find a solution, I will be glad to write.

[@LoppanH]

Got a BMW with the same setup into the garage today and it has that squeaky sound we did change the tensioner and belt not long ago and now it's back think I try with an OEM part this time.

[@tonybb2522]

I changed everything twice with original and oem and it didn't fix it. Have you already fixed the problem and if so where did it come from?

[@LoppanH]

@@tonybb2522 I think we got an Oem belt from the BMW dealer and it made the sound go away.

[@babunezab]

Did it solve the problem completely? Did the problem back? I have exactly the same issue, and planning to put original tensioner and the belt (as you recommend), after replacement of the pulley and non-original belt and tensioner which did not solve the issue

[@Assyriiianboy]

Did you replace it? And what brand?

[@adelzamti1302]

Hello everybody, I have the same pb on my one 116 d F20 model 2018 in Morocco, I have putting alternator clutch, it's working well

[@giovannid6491]

Hi, can you give me the part number of the alternator clutch? Thanks

[@Kometfoto]

I have same problem with mine 116d Changed 10 belts and four tensioners. What I heard the pulley are welded stock on the alternator and can’t remove.

[@dan7023]

That’s the egr

[@murenitu]

change new belt bmw oem is solvent??

[@BlahBlahBleh317]

If you watched until the end 8:50 you would have known what I'd recommend. I started by changing the old original belt with the Continental. But, clearly the Continental belt is not suited for this car and I'd bet that the large majority of aftermarket belts out there are not as well. Why? Because of the belt surface and it's grip on the pulleys. See the video. After that I changed the tensioner but the problem persisted. But this time the problem was the Continental belt. With a new tensioner and a new original BMW belt the problem was fixed. So what was the problem? The belt was slipping in the pulleys at startup. What was causing it? I don't know. It was either metal fatigue on the tensioner spring and/or an old belt with insufficient grip. What I wish I would have done in the first place? Buying a new original belt and running it with the old tensioner and see if that alone fixed it. Because replacing the tensioner might have been redundant. As such I would recommend that you start by replacing the v-belt with an original one. Should be about EUR 30. The rationale of trying this first is that it's easy and relatively cheap. If eventually the problem is not fixed and you end up needing a new tensioner you already have a new belt because that was the first thing you bought and tried. It doesn't really make sense to me having an old belt in there with a new tensioner. I managed to buy the SWAG tensioner for about EUR 60 and a new original should be around EUR 110. I have no opinion about which of the two you should buy, it's up to you. The prices listed are for parts only. Let me know what you did to get yours fixed!

[@soldiers-nf2ps]

Change belt and tensioner but use oem genuine parts

[@godakuri5944]

I did that and it didn’t work. The belt shredded after just over a month of being replaced

[@soldiers-nf2ps]

@@godakuri5944 do you have any orange looking dust around if you do change the crankshaft pulley as there is a tsara case on this

[@godakuri5944]

@@soldiers-nf2ps yeah I actually do

[@godakuri5944]

@@soldiers-nf2ps thanks for the info

[@BmwFix]

does anyone have any problems with these 3 cylinders diesel engines from Bmw ?

[@simontist]

The engine seems to move around a lot when starting, is that normal?

[@BlahBlahBleh317]

It's normal. It's a 3 cylinder diesel engine, it's going to shake. You are also seeing it on slow motion... You can't tell a thing inside the cabin

[@el_semir]

@@BlahBlahBleh317oh you can, it’s the same inside as outside

[@bluebear6133]

Hi, im having problems with my 116d at the moment, especially with the intake manifold. Can you make a video showing the lever by the actuator? Thanks!

[@LoopBooost]

The question is, is this car reliable?

[@iz_no_good]

After 70.000 kms on my 2016 F20 with this engine, i can say both car/engine are great, zero failures so far. Overall, very satisfied with the car, hope the experience stays this way :)

[@ArheroCasemiro]

160.000km no big problems take care of them and service them every 8.000km and your all good

[@iz_no_good]

@@ArheroCasemiro you service every 8K? my local BMW dealer dialed in that next service should be after 25K, two times. Did it once, but now i plan to not honnor their plan and at least change oil after 15K.

[@ArheroCasemiro]

@@iz_no_good yes every 8k-10k I service it Oil,Oil filter and air filter. Fuel filter and cabin filter every 20k. Do not listen to bmw or any silly people telling you to service when the light comes on. If u own the car service it every year or every 10k km max if u want to have a good car and less problems in the future.

[@iz_no_good]

@@ArheroCasemiro will do man, i kept the same oil for 25K and didnt like the "rough" sound from the engine, i plan to change oil at 15K now. They are official BMW dealer, they would love to dial next oil change = 10K (for example) instead of 25K, but they have to stick to official BMW's service plan - i guess

[@petrkoncicky1029]

Any problems with B37 engine anyone? I just hit 100k km and had a severe oil leak - oil filter housing gasket was the problem. Other than that no problems at all.

[@BlahBlahBleh317]

Was it cheap to fix? Seems like an easy thing to fix if it was just the gasket, but I haven't looked it up. These 3cyl cars seem to be reliable. Plenty of them for sale on mobile.de with > 200.000 km. But they are at most 6 years old and you can't tell if there was major work done on them or not. Also, with that kind of mileage and that age they were doing highway kilometres for sure. City traffic is another ballpark and I'm not sure if they will hold up well in that environment. Plenty of them rolling around commuting and grocery shopping where I live at the moment though. One thing that came up this week was the crank pulley started to rust... Apparently the back is not painted and its flocking a bit of rust (also from the sides of the pulley where the belt doesn't touch) on to the v-belt and water pump wheel. But, as of yet it's not an issue, since it's only cosmetic. I'll keep an eye on it though. This superficial rust might not be bad construction per se, since the previous owner did enjoy her trips to the beach hehehe. And the car was very likely always parked outside. Weird nonetheless, since the weather here is pretty mellow on cars. Rust, even on old cars is mostly non-existent.

[@petrkoncicky1029]

@@BlahBlahBleh317 I dont recall how much exactly it was - either 3500 CZK or 4500 CZK (135 EUR or 173 EUR). It was done by one independent repair shop specializing in BMW vehicles in Prague, the mechanic changed the gasket, topped up the oil and cleaned the engine bay, which was covered with oil, because I was driving for a while with the leakage and lost like 2-3 litres in total. The mechanic told me to get rid of the car around 150-160kkm, because there is high probability of breaking the timing chain later on, which is expensive to fix. Hard to say if those cars on mobile.de are right before servicing the timing chain or the service of the timing chain was already done. I bought my 116d (10/2015) on 5/2019 with 74kkm from Munich. Now I have 105kkm, I drive mostly highways and I avoid to use it for grocery shopping, I walk instead haha.

[@emregokdemir7689]

​@@BlahBlahBleh317 Crank pulley rust is a common problem in these cars. I have the same problem with my vehicle now. which crank pulley brand do you recommend? Corteco etc.? Would you recommend febi bilstein or Ina brand as tensioner? Thank you in advance for your help.

[@ArheroCasemiro]

160.000km all good just service them on time every 8.000 km

[@GeorgeAusters]

Belt should be 1155mm long not 1153mm

[@Assyriiianboy]

Im confused, as you said I also thought is should be 1155, but some people buy 1153 for this car. Im not sure maybe its more tension but not sure if it would be better

[@ElCSB]

Amazing shit engine engineering, BMW keep doing this garbage plastic engines.