BMW 325i E46 2008 overheating after repairing the head.

Asked by GuruPZV67 Jan 14, 2020 at 01:43 PM about the 2008 BMW 3 Series

Question type: Maintenance & Repair

I repaired the head last year and I have a small leak
on top of the water bottle, I only started using the
car last week Monday, on Friday it overheated, I
bled the system and it worked fine from then until
this afternoon, it heated up again and it's still doing
the same thing.

9 Answers

So the pressure is building up continously after the heat gauge went up this afternoon, I bled the system again, filled more water. I left the car running and the heat gauge was picking up again.

Did you take care of the rest of the cooling system? Pump, hoses, radiator etc?

Not sure if the pump is the problem, I have a leak on the pipe near the water bottle , I was going to change the water bottle and the pipe this weekend. But how can that cause the heat gauge to pick up so quickly and also build up pressure so fast.

I'm just stressed, I can't afford to spend money on the head again. I just hope and pray it's not that, i don't see any signs of the oil and water mixing, is there any other signs of checking if it is the head or something else

41,150

You can perform some tests like a cylinder pressure test and or leak down test. Fix the leaky hose and re bleed the system and see if things get back to normal.

Your Answer:

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 1,191 nationwide 3 Series listings starting at $1,995.

Postal Code:

CarGurus Experts

  • #1
    Robert Charlson
    Reputation
    3,950
  • #2
    apbimmer98
    Reputation
    3,100
  • #3
    Abu Luca
    Reputation
    2,980
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used BMW 5 Series
22 Great Deals out of 323 listings starting at $4,500
Used BMW M3
7 Great Deals out of 98 listings starting at $15,995
Used Mercedes-Benz C-Class
88 Great Deals out of 1,415 listings starting at $3,499
Used Lexus IS
24 Great Deals out of 342 listings starting at $5,800
Used BMW X3
53 Great Deals out of 1,029 listings starting at $1,999
Used Dodge Charger
41 Great Deals out of 602 listings starting at $4,888
Used Ford Mustang
51 Great Deals out of 1,253 listings starting at $4,995
Used BMW M5
43 listings starting at $26,800
Used Mercedes-Benz E-Class
46 Great Deals out of 505 listings starting at $5,700
Used BMW X5
42 Great Deals out of 1,195 listings starting at $3,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.