My car doesn't over heats but when I took my cap off of my radiator the stuff came out and my co worker said I should get a radiator flush

Asked by Mar 26, 2017 at 05:32 PM about the 2003 Buick LeSabre Limited

Question type: General

3 Answers

74,725

If the engine was hot, or still warm, coolant will come out of the radiator due to expansion of the coolant. You never want to take the radiator cap off when the engine is hot, only when it is cooled down.

74,725

The cooling system builds up pressure when it is hot.

20

For every lb that is listed on the cap, it increase the boiling point of water. When you shut your car off and you have a temp gauge. Turn the key to on and don't start it. The temp gauge should rise as it is no longer circulating and being cooled. You should never open your radiator cap right after shutting off car. Boiling point of water if I remember right is 212%. Take a radiator cap that holds 14 lbs of pressure. Take that 14 by 3 and you have changed the boiling point of water to 254. When you take the cap off, the water goes right back to 212% and that is why some people get burnt, because the water just blows out. Keep it running and take a hose and run cold water over the radiator to lower the temp. The temps on the new cars run a lot higher than older cars. Never take a cap off is the engine is hot.

Your Answer

LeSabre

Looking for a Used LeSabre in your area?

CarGurus has 14 nationwide LeSabre listings starting at $4,395.

Postal Code:

Buick LeSabre Experts

  • #1
    Tom Demyan
    Reputation
    2,270
  • #2
    John Saffrahn
    Reputation
    2,030
  • #3
    Austin Gaboda
    Reputation
    1,440
View All

Related Models For Sale

Used Buick Regal
6 Great Deals out of 270 listings starting at $6,995
Used Chevrolet Impala
152 Great Deals out of 1,055 listings starting at $1,500
Used Buick Century
16 listings
Used Lincoln Town Car
22 listings starting at $1,850
Used Honda Accord
78 Great Deals out of 915 listings starting at $1,411
Used Toyota Camry
95 Great Deals out of 2,284 listings starting at $1,781
Used Chevrolet Malibu
96 Great Deals out of 2,060 listings starting at $1,485

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.