SPONSORED LINKS

Coolant overflowing through the reservoir?

Tiny
GEORGE VICTOR2
  • MEMBER
  • 2007 BMW 318
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 350,000 MILES
I have an: 318d - 122hp/90kw -m47engine- BMW - 2007. The coolant disappears from the reservoir after a 20km trip, yellow warning on dash. No leak, no smoke, no oil level increase, no oil in the coolant. I let the car run without the coolant cap, topped at max - and it stayed like that, then car heat up to 95*C degrees, coolant came up the reservoir bursting out, overflowing. Do you have any ideas?
SPONSORED LINKS
Monday, August 21st, 2023 AT 11:40 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
This sounds like you have a blown head gasket, even though you don't have coolant in the oil a head gasket can still be bad.

Please go over this guide to help confirm the problem:

https://www.2carpros.com/articles/head-gasket-blown-test

Or you have a water pump leak which only leaks as you drive.

Please go over this guide as well:

https://www.2carpros.com/articles/car-is-leaking-coolant

Please go over these guides and get back to us.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, August 21st, 2023 AT 4:05 PM

Please login or register to post a reply.

Related Coolant Reservoir Content

Coolant Reservoir Replacement
VIDEO
Coolant Reservoir Replacement
Instructional repair video
Transmission Fluid in Radiator Coolant Reservoir
GUIDE
Transmission Fluid in Radiator Coolant Reservoir
All automatic transmission vehicles are equipped with an transmission fluid oil cooler, when transmission fluid is discovered inside the coolant reservoir or the radiator it...
VIEW MORE

Sponsored links