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      10-07-2021, 06:55 PM   #617
ogyousefm4
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my car keeps smoking whenever i stop it sweat smell looked in the intercooler empty assumed it was cracked replaved it car is still doing the same thing, what do you think it would be
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      10-07-2021, 07:04 PM   #618
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On the new replacement it still leaks?

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Originally Posted by ogyousefm4 View Post
my car keeps smoking whenever i stop it sweat smell looked in the intercooler empty assumed it was cracked replaved it car is still doing the same thing, what do you think it would be
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      11-22-2021, 08:51 PM   #619
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On the new replacement it still leaks?

Quote:
Originally Posted by ogyousefm4 View Post
my car keeps smoking whenever i stop it sweat smell looked in the intercooler empty assumed it was cracked replaved it car is still doing the same thing, what do you think it would be
Guys, quick check that if I add additional coolant much more over the ''maximum'' level, which almost fill up the reservoir, does it cause any harm to the vehicle?
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      11-22-2021, 09:08 PM   #620
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Quote:
Originally Posted by Matt Liang View Post
Quote:
Originally Posted by bvrider1 View Post
On the new replacement it still leaks?

Quote:
Originally Posted by ogyousefm4 View Post
my car keeps smoking whenever i stop it sweat smell looked in the intercooler empty assumed it was cracked replaved it car is still doing the same thing, what do you think it would be
Guys, quick check that if I add additional coolant much more over the ''maximum'' level, which almost fill up the reservoir, does it cause any harm to the vehicle?
Yes, you need to leave some room for heat expansion. If you overfilled it, when the engine gets up to operating temperature and build up pressure that extra coolant will have to go somewhere, which puts extra stress on your coolant system.
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      11-22-2021, 09:32 PM   #621
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Quote:
Originally Posted by Jbonly21 View Post
Quote:
Originally Posted by Matt Liang View Post
Quote:
Originally Posted by bvrider1 View Post
On the new replacement it still leaks?

Quote:
Originally Posted by ogyousefm4 View Post
my car keeps smoking whenever i stop it sweat smell looked in the intercooler empty assumed it was cracked replaved it car is still doing the same thing, what do you think it would be
Guys, quick check that if I add additional coolant much more over the ''maximum'' level, which almost fill up the reservoir, does it cause any harm to the vehicle?
Yes, you need to leave some room for heat expansion. If you overfilled it, when the engine gets up to operating temperature and build up pressure that extra coolant will have to go somewhere, which puts extra stress on your coolant system.
So, does the additional fluid evaporate over the cap to an ideal level controlled by system? Or it will remain in the reservoir keeping unpredicted pressure to the coolant system?
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      11-23-2021, 11:40 AM   #622
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Quote:
Originally Posted by Matt Liang View Post
Quote:
Originally Posted by Jbonly21 View Post
Quote:
Originally Posted by Matt Liang View Post
Quote:
Originally Posted by bvrider1 View Post
On the new replacement it still leaks?

Quote:
Originally Posted by ogyousefm4 View Post
my car keeps smoking whenever i stop it sweat smell looked in the intercooler empty assumed it was cracked replaved it car is still doing the same thing, what do you think it would be
Guys, quick check that if I add additional coolant much more over the ''maximum'' level, which almost fill up the reservoir, does it cause any harm to the vehicle?
Yes, you need to leave some room for heat expansion. If you overfilled it, when the engine gets up to operating temperature and build up pressure that extra coolant will have to go somewhere, which puts extra stress on your coolant system.
So, does the additional fluid evaporate over the cap to an ideal level controlled by system? Or it will remain in the reservoir keeping unpredicted pressure to the coolant system?
Keeps building pressure on the coolant system.
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      11-23-2021, 02:50 PM   #623
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I would suspect a large majority of the coolant reservoir failures (leaking, seaping) are due to too much coolant (above the max line) and the resultant excessive pressure build up.
Unfortunately after every service at the BMW dealership, they “top off” all the fluids and end up adding too much coolant. I ALWAYS am removing excess coolant from both reservoirs.
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      11-25-2021, 11:25 PM   #624
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Quote:
Originally Posted by Fat Goose View Post
I would suspect a large majority of the coolant reservoir failures (leaking, seaping) are due to too much coolant (above the max line) and the resultant excessive pressure build up.
Unfortunately after every service at the BMW dealership, they “top off” all the fluids and end up adding too much coolant. I ALWAYS am removing excess coolant from both reservoirs.
Quote:
Originally Posted by Fat Goose View Post
I would suspect a large majority of the coolant reservoir failures (leaking, seaping) are due to too much coolant (above the max line) and the resultant excessive pressure build up.
Unfortunately after every service at the BMW dealership, they "top off" all the fluids and end up adding too much coolant. I ALWAYS am removing excess coolant from both reservoirs.

This is the coolant level of mine now, is it still too much or it's good enough?

The coolant level is a tiny little bit over the Max level line
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      11-26-2021, 08:36 AM   #625
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Quote:
Originally Posted by Matt Liang View Post
Quote:
Originally Posted by Fat Goose View Post
I would suspect a large majority of the coolant reservoir failures (leaking, seaping) are due to too much coolant (above the max line) and the resultant excessive pressure build up.
Unfortunately after every service at the BMW dealership, they "top off" all the fluids and end up adding too much coolant. I ALWAYS am removing excess coolant from both reservoirs.
Quote:
Originally Posted by Fat Goose View Post
I would suspect a large majority of the coolant reservoir failures (leaking, seaping) are due to too much coolant (above the max line) and the resultant excessive pressure build up.
Unfortunately after every service at the BMW dealership, they "top off" all the fluids and end up adding too much coolant. I ALWAYS am removing excess coolant from both reservoirs.

This is the coolant level of mine now, is it still too much or it's good enough?

The coolant level is a tiny little bit over the Max level line
Quote:
Originally Posted by Matt Liang View Post
Quote:
Originally Posted by Fat Goose View Post
I would suspect a large majority of the coolant reservoir failures (leaking, seaping) are due to too much coolant (above the max line) and the resultant excessive pressure build up.
Unfortunately after every service at the BMW dealership, they "top off" all the fluids and end up adding too much coolant. I ALWAYS am removing excess coolant from both reservoirs.
Quote:
Originally Posted by Fat Goose View Post
I would suspect a large majority of the coolant reservoir failures (leaking, seaping) are due to too much coolant (above the max line) and the resultant excessive pressure build up.
Unfortunately after every service at the BMW dealership, they "top off" all the fluids and end up adding too much coolant. I ALWAYS am removing excess coolant from both reservoirs.

This is the coolant level of mine now, is it still too much or it's good enough?

The coolant level is a tiny little bit over the Max level line
With the engine cold, the coolant should not be any higher than the middle between Max and Min. Allows for temperature fluctuations.
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      11-26-2021, 08:51 AM   #626
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Is the coolant color supposed to be clear/brownish? Noticed Mine was when upgrade it to CSF?
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      11-26-2021, 10:33 AM   #627
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Is the coolant color supposed to be clear/brownish? Noticed Mine was when upgrade it to CSF?
Mine was clear/brownish as well. Curious as to what others say.
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      11-27-2021, 01:14 PM   #628
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Quote:
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Quote:
Originally Posted by Drei3000 View Post
Is the coolant color supposed to be clear/brownish? Noticed Mine was when upgrade it to CSF?
Mine was clear/brownish as well. Curious as to what others say.
BMW factory coolant is an aqua green/bluish color.

Also keep an eye on weeping at seam coolant expansion tank. I've had two fail in two f80s bought new. It's a very slow leak over time so takes some convincing to get it replaced under warranty since the pressure test checks out ok.
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      01-19-2022, 12:38 AM   #629
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Quote:
Originally Posted by jeremywag01 View Post
Quote:
Originally Posted by Drei3000 View Post
Is the coolant color supposed to be clear/brownish? Noticed Mine was when upgrade it to CSF?
Mine was clear/brownish as well. Curious as to what others say.
Depends on age of your car. There was a Magenta coolant before they switched us to Blue. It was for easy recognition that it's "not green". The color also made it easy to know when it was flushed through (with Blue). I recall seeing a chart that allowed certain colors to be mixed and others not.
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      02-20-2022, 10:56 AM   #630
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This is happening to me too, mine seems to be very weird, at first I open the cap and see that the tank is empty and then I top it off.

I then try bleeding procedure and this foams starting to show up, not bubbles but literally white foams. After I park the car for half an hour, the white foams disappear, but it shows up again if I try bleeding the system.

So this can conclude that my main reservoir take is leaking? or Intercooler?



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      05-11-2022, 01:24 PM   #631
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Man this thread had me running to my car to check my coolant levels.

MY2015 55k miles.

My TMIC reservoir looks great. Nice and full.
My engine reservoir was empty though.

Should I be worried or just top off and continue my day?
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      05-11-2022, 03:44 PM   #632
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Quote:
Originally Posted by trungnguyen28 View Post
Man this thread had me running to my car to check my coolant levels.

MY2015 55k miles.

My TMIC reservoir looks great. Nice and full.
My engine reservoir was empty though.

Should I be worried or just top off and continue my day?
Fill it up with some “distilled” water!
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      06-17-2022, 10:34 AM   #633
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29k miles, 2018 M4 CS

Just got my intercooled replaced

Mechanic went inside with camera and saw cracks

Started with a drivetrain malfunction and leaking coolant

Lucky that insurance took it (1700 dollars for parts + work)
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      06-19-2022, 09:21 AM   #634
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Fill tank

I think I saw two posts that talked about overflow tank showing white foam/bubble. I saw the same thing (image attached) with level near bottom end. It stayed on that level many months. I just added a bit of coolant, test drove and foam/bubble is gone.

Before adding coolant: Charge air temp was about 20-22 degree above ambient while cruising.

After adding coolant: Charge air temp was about 18-20 (saw as long as 14) degree above ambient while cruising.

I think if there is no leak, adding coolant can help with foaming. It looked like water was rushing through the tank and when the level was low, and it was causing it to foam up (many small bubbles). After adding coolant, I can see the water stream but no more foam/bubble.
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      06-19-2022, 12:25 PM   #635
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Quick question, if intercooler/reservoir tank replacement is needed (heat exchanger not included), does the system need to be bled when coolant is added or no? Thanks.
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      06-19-2022, 01:49 PM   #636
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Quote:
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Quick question, if intercooler/reservoir tank replacement is needed (heat exchanger not included), does the system need to be bled when coolant is added or no? Thanks.
Depends on how much fluid is lost/air has gotten in. Wouldn't hurt to do it either way
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      06-19-2022, 09:22 PM   #637
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I would do it either way
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      07-23-2022, 05:48 PM   #638
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Quote:
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Here's an update to the OP's car. Almost two years later the replacement charge air cooler failed again. The car is at 42k miles and on its second charge air cooler.

Codes found via MHD include:
108C01- Charge air temperature, plausibility:temperature too high
120408- Charging pressure control: Switch-off as consequential reaction
20A201- Charge air, cooling system: Dry-run detected
i just got these same codes when pulling up my codes on MHD. so this pretty much means my tmic is screwed and i should upgrade? or what else do i need to do? did coolant more than likely leak into the intake manifold like your original post? i don't know what to do, any help appreciated. i will check the j pipe and coolant level once i'm home after the weekend to see what's going on but i can't right now, just worried.
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