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      04-14-2023, 06:10 PM   #1
Jajatu
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Unhappy Problems with my 116i N13 F21

Right now I don’t really know what should I do with my car. It has 87k milles, remapped to 220hp. It only have had 2 problems during the last 10 years, 1 coolant pipe (the one that usually breaks that is in the back of the engine) and 1 coil (just after replace 4 sparks) and running 5w30 he barely burn 0.5 litres every 6k milles so I think that I’m really lucky reading the comments of the people about the N13 engine.

But now, sometimes I have problems when I’m accelerating around 3k rpm, if it is uphill it’s worst. Sometimes it’s like a power cut of 0.5 seconds, sometimes it seems to be misfires, and sometimes nothing.

I don’t have any DTC on ISTA.

All these engines sound pretty bad on cold starts, but mine, I think that it’s starting to sound the timing chain, and maybe this elongation could cause this problem when VANOS kick in, what do you think??

I have tried to run 98RON (best petrol here in Spain) but there is no changes.

Should I try to reinstall my old sparks/coils?? I’m not really sure about this, because it didn’t started after the replacement.

I will upload a video showing the pretty ugly cold start sound

Thanks in advance
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      04-15-2023, 06:48 PM   #2
Jajatu
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I think that I’m going to sell this fucking N13 and buy a new Mazda 3
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      04-17-2023, 08:25 PM   #3
Jajatu
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https://youtu.be/-PEQzDM6X0Q

As I promised, cold start video
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      04-17-2023, 08:26 PM   #4
Jajatu
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Around second 23 is the strange noise
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      04-18-2023, 12:02 PM   #5
Jajatu
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A mechanic of a BMW specialist workshop told me that it is not the timing chain, it’s probably related with accessory belt/coolant pump
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      05-17-2023, 05:43 PM   #6
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Problem solved! It was the electronic actuator of the water pump!
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      05-17-2023, 11:50 PM   #7
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So there is an electronic actuator while it's belt-driven.

I still like your Mazda 3 idea.
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      05-19-2023, 04:53 AM   #8
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Quote:
Originally Posted by No one View Post
So there is an electronic actuator while it's belt-driven.

I still like your Mazda 3 idea.
It's not belt driven. It's friction driven with the actuator moving the pump onto or away from the drive wheel.

It caught me out because the driving wheel has a rubber friction coating which seemed worn so i assumed i was looking at the belt.
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      05-19-2023, 06:30 AM   #9
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Quote:
Originally Posted by IJO View Post
It's not belt driven. It's friction driven with the actuator moving the pump onto or away from the drive wheel.

It caught me out because the driving wheel has a rubber friction coating which seemed worn so i assumed i was looking at the belt.
Yes, I did notice some contradiction myself: having read about "attachable" alternator (having felt that as the car becomes noticeably "vivid" after a prolonged drive?) I was surprised at "rumors" of "accessory belt" here on the forum. And still this is how they put it: https://www.realoem.com/bmw/enUS/sho...diagId=11_4998. Both a friction wheel "somewhere about there" and a belt. Are you sure you did tell alternator from the pump? Detaching the pump looks weird.
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      05-20-2023, 07:27 AM   #10
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Quote:
Originally Posted by No one View Post
Yes, I did notice some contradiction myself: having read about "attachable" alternator (having felt that as the car becomes noticeably "vivid" after a prolonged drive?) I was surprised at "rumors" of "accessory belt" here on the forum. And still this is how they put it: https://www.realoem.com/bmw/enUS/sho...diagId=11_4998. Both a friction wheel "somewhere about there" and a belt. Are you sure you did tell alternator from the pump? Detaching the pump looks weird.
The alternator is under the turbo on the other side of the engine.
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      05-21-2023, 02:05 PM   #11
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All right. I had to recall I had downloaded a few "technical training" documents before ordering the car. Here we are (in my own translation ).

The belt drive includes the main belt drive with the alternator and the air conditioner compressor and and additional belt drive with a friction wheel and the coolant pump. The main drive has a tensioner, the additional one does not.

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1. Crankshaft pulley.
2. Belt.
3. Belt tensioner.
4. Alternator pulley.
5. Air conditioner compressor pulley.
6. Friction wheel drive.
7. Coolant pump.

The N13 engine's coolant pump is driven with a friction wheel. In a de-energized state of the friction wheel actuator the friction wheel is pressed against the crankshaft pulley and the coolant pump with a spring. The coolant pump is driven with a friction wheel that looks like a pulley with a belt attached.

The back side of the belt on the crankshaft pulley rotates the friction wheel. The friction wheel, in turn, drives the coolant pump. This design allows to do without another belt drive. This allows for better use of the mounting space and makes the design shorter and compact. Due to less side forces on the coolant pump shaft the pump's housing can be completely plastic. The plastic housing facilitates flows and the coolant pump's performance.

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1. Attachment screw.
2. Case cover.
3. Maintenance handle.
4. maintenance tape.
5. Spring.
6. Eccentric.
7. Top mount.
8. Case cover.
9. Electric motor.
10. Plug-in contact.

The thermoregulation system detects the need for cooling at the particular moment and regulates the cooling system accordingly. In some working states the coolant pump can be completely off, for example, for quick coolant heating at warming up. Besides that the auxiliary coolant pump responsible for cooling of the turbocharger can be turned on and off. That is, cooling intensity can be set independently of the engine crankshaft revs. The thermoregulation system is capable of turning on and off both the mechanical coolant pump and the electrical auxiliary coolant pump depending on the need and also of executing the adjustment of the programmable thermostat. Thus the engine control system can adjust the coolant temperature to the traffic situation. These measures allow additional fuel saving.
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      05-24-2023, 06:08 AM   #12
Neepamonsteri
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@No one

Mind if I ask where were you able to download technical training documents?
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      05-24-2023, 11:52 AM   #13
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Quote:
Originally Posted by Neepamonsteri View Post
@No one

Mind if I ask where were you able to download technical training documents?
On a local site. They are in a language you wouldn't want to know (I had to translate those excerpts), this is why I didn't simply share a link or upload those here . I've just checked it (I downloaded those documents in the February of 2013), it looks quite down anyway.
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      05-25-2023, 02:06 AM   #14
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Quote:
Originally Posted by No one View Post
On a local site. They are in a language you wouldn't want to know (I had to translate those excerpts), this is why I didn't simply share a link or upload those here . I've just checked it (I downloaded those documents in the February of 2013), it looks quite down anyway.
Oh okay

Do you know if there is an "official way" to get these even in english?
I'd be happy to pay a reasonable fee just to learn and study more about this specific car.
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      05-25-2023, 05:21 AM   #15
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Quote:
Originally Posted by Neepamonsteri View Post
Do you know if there is an "official way" to get these even in english?
I'd be happy to pay a reasonable fee just to learn and study more about this specific car.
The word is BMW puts more obstacles for indies and DIYs, making all the technical information available from them directly only. With that said, here you are: https://f20.1addicts.com/forums/show....php?t=1675697. "Look around you!" Just note our 1 Series wasn't offered/available in the US. So at BMW NA's you might want to look at the 2 Series, technically the closest. No N13, I believe: they like big engines there.
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      05-26-2023, 08:07 AM   #16
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Quote:
Originally Posted by No one View Post
The word is BMW puts more obstacles for indies and DIYs, making all the technical information available from them directly only. With that said, here you are: https://f20.1addicts.com/forums/show....php?t=1675697. "Look around you!" Just note our 1 Series wasn't offered/available in the US. So at BMW NA's you might want to look at the 2 Series, technically the closest. No N13, I believe: they like big engines there.
Yea it feels that way when I tried to look around, haha.
Thanks for link, useful data. Guess I deserved the music. Still could not find specifically N13 or F20 docs, guess we are out of luck with this one.
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      05-26-2023, 10:15 PM   #17
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Try this: https://filebin.net/eb6v3m02s5utjkxz...ing_manual.pdf
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      06-07-2023, 01:35 PM   #18
Jajatu
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Quote:
Originally Posted by No one View Post
So there is an electronic actuator while it's belt-driven.

I still like your Mazda 3 idea.
I tested Mazda 3 with the Skyactiv-G 122 hp. Slow as shit. I also tested the e-Skyactiv-X 186hp, both manual, I feel them really slow, I know that they are NA and my 116i is turbo (and remaped to 220hp), but I feel them reaaaaaally slow.

I also drove a carsharing Corolla 122hp hybrid and it seems to be faster than the 186hp Mazda, and the fu*ing Corolla is doing 0-100 in 5 natural days...
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