Radiator losing coolant. No water in the oil. No apparent leaks. Car wont start sometimes after it has been ran awhile. Changed the thermostat. Plugs & wires as well. What is wrong?

Asked by Sep 26, 2014 at 10:15 PM about the 2002 Hyundai Elantra GLS

Question type: Maintenance & Repair

5 Answers

20,390

Sounds like head or intake gaskets. Have it pressure tested at a REPUTABLE mechanic.

2 of 2 people found this helpful.
102,105

Yep same here.

225

Blown head gasket. Usually. Thousands of dollars. Sorry.

12,120

It does sound like a bad head gasket, for about 40 bucks you can get a test kit for the radiator. it involves pulling some air from the radiator through a test fluid that will detect combustion gasses in the cooling system. Not that hard to do, just follow the instructions on the kit. there are some good youtube vids on that too.

1 of 1 people found this helpful.
75

I have owned several Hyundai's from Santa Fe to Elantra(4). All of them would start experiencing coolant loss with no trace of where it would go. I consulted my Hyundai Dealer Shop Manager. Very bright individual always puts me on the path of issues that Hyundai has. This issue involves the "spring loaded" Hose clamps for the upper hose,bypass hose and lower hose. They get weak with time and the hose hardens with heat and age. Suggest doing the following. Thourughly fluff the system. First remove all hoses from engine and radiator. Obtain new hoses. New worm screw clamps and replace the thermostat. Fill the system with proper mixture of coolant. Allow it to run until hot then re- torque all of the hose clamps. Make sure to clean out the overflow bottle too and fill it to the proper line. This should cure the disappearing fluid issues. I have hundreds of thousands of miles on all my Hyundai cars. Never had a head gasket issue under normal driving conditions and care.

4 of 4 people found this helpful.

Your Answer

Elantra

Looking for a Used Elantra in your area?

CarGurus has 46,304 nationwide Elantra listings starting at $795.

ZIP:

Hyundai Elantra Experts

  • #1
    pittgirl
    Reputation
    2,000
  • #2
    Carrie Shelton
    Reputation
    1,390
  • #3
    tenspeed
    Reputation
    1,120
View All

Related Models For Sale

Used Hyundai Sonata
727 Great Deals out of 50,360 listings starting at $500
Used Honda Civic
755 Great Deals out of 69,404 listings starting at $1,000
Used Toyota Corolla
780 Great Deals out of 53,912 listings starting at $1,200
Used Toyota Camry
924 Great Deals out of 80,593 listings starting at $1,440
Used Honda Accord
1,026 Great Deals out of 57,886 listings starting at $1,099
Used Hyundai Accent
189 Great Deals out of 12,657 listings starting at $2,300
Used Nissan Altima
987 Great Deals out of 77,439 listings starting at $1,000
Used Kia Optima
396 Great Deals out of 29,718 listings starting at $2,000
Used Ford Focus
805 Great Deals out of 55,008 listings starting at $800
Used Nissan Sentra
572 Great Deals out of 52,265 listings starting at $1,995

Used Cars For Sale

2014 Hyundai Elantra GLS For Sale
35 listings starting at $7,995

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.