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2006 Hyundai Tuscon Coolant Loss

Tiny
IGIT
  • MEMBER
  • 2006 HYUNDAI TUCSON
  • 2.7L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
Losing coolant even when car is not running. Had two different mechanics check it out. Pressure test was done looked ok. Replaced all 4 radiator hoses and 2 Heater Hoses since they were old and we play to keep the car. Dealer told me that the issue was the hoses and not the engine head/gasket etc, But I am still losing a few ounces a day. Car seems to run fine. Does not over heat as long as I keep the coolant filled. No leaks can be seen
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Sunday, February 2nd, 2014 AT 10:59 AM

7 Replies

Tiny
HOMER1967
  • MECHANIC
  • 875 POSTS
You see nothing on the ground when the car is parked in one spot overnight or all day? Have you checked the oil to see if it looks milky of foamy? Does the heater work good and blow hot air? Any steam coming out of the heater ducts?
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Sunday, February 2nd, 2014 AT 11:46 AM
Tiny
IGIT
  • MEMBER
  • 5 POSTS
No leaks, heater works fine, car does not overheat as long as I keep the coolant level ok. No steam and no leaks noticed. The oil looks OK to me and the dealer thought the same. Hence the mystery
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Sunday, February 2nd, 2014 AT 12:00 PM
Tiny
HOMER1967
  • MECHANIC
  • 875 POSTS
Have you checked the transmission fluid level to make sure that it is not over full? Are either side of the floor boards getting wet? Check up high under the dash on both sides to see if the carpet is getting wet.
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Sunday, February 2nd, 2014 AT 12:23 PM
Tiny
IGIT
  • MEMBER
  • 5 POSTS
Thanks Carpet is fine. I will check the tranny fluid
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Sunday, February 2nd, 2014 AT 1:44 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
PULL YOUR PLUGS (KEEP THEM IN ORDER AS TO THE CYLINDER THEY CAME FROM) AND COMPARE THEIR COLOR

IF YOU CAN SEE THE TOPS OF THE PISTONS---SEE IF ONE (OR MORE) HAS A SANDBLASTED TEXTURE (THEY SHOULD BE SMOOTH OR SLICK). SOME PLACES HAVE A MINI-CAM THAT MIGHT SEE THIS THRU THE PLUG HOLES

AN SLOW INTERNAL HEAD GASKET LEAK INTO A CYLINDER CAUSES "DETONATION". THIS GIVES IT THE "SANDBLASTED" OR "PITTED" LOOK

I HAVE A '46 JEEP THAT THIS HAPPENED TO A FEW YEARS BACK (MINE WAS RUNNING FINE TOO AND UN-NOTICED. UNTIL "DETONATION" BROKE A TOP RING (THIS WAS IN MY CYLINDER 4).I STARTED HEARING A TAPPING

I INVESTIGATED EZ STUFF 1ST---THIS IS A FLATHEAD, EZ TO WORK ON---I DROPPED THE PAN AND IT WASN'T MY BEARINGS----THEN I PULLED THE HEAD. IT WAS OBVIOUS #4 HAD A PROBLEM

MY OLD PISTONS ARE AT MY BUDDIES HOUSE ( I FAILED TO TAKE PICS OF THEM THUS FAR). BUT I WILL SOON!

I DO HAVE A PIC OF THE BOTTOM SIDE OF THE HEAD---LOOK AT #4s COLOR !

I REPLACED ALL OF MY BEARINGS (SINCE I WAS IN THERE) AND ALL 4 PISTONS. SURFACED THE HEAD AND A NEW HEAD GASKET.I SPENT LESS THAN $300. WHEW!

KEEP US POSTED ON PROGRESS

THE MEDIC
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Sunday, February 2nd, 2014 AT 8:34 PM
Tiny
IGIT
  • MEMBER
  • 5 POSTS
Tranny Fluid is fine. It snowed yesterday. So I ran the car and then let it sit over night after I place snow under the car. So I did find some drops on the ground in the snow in front close to front driver side wheel. I could not see where it came from just where it landed. Wants much a few drops only a small % of what I am losing. So I assuming its probably hitting somewhere else evporating and then whats left is hitting the ground
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Tuesday, February 4th, 2014 AT 1:36 PM
Tiny
SAVSOL
  • MEMBER
  • 6 POSTS
I am having the same problem. I noticed mine during the summer while traveling. After driving a couple of hours, I had the AC on low and it was still not cold. I stopped for a break and when I started the car again and turned on the AC, small ice pieces blew out of the vents!

Any ideas, thoughts, suggestions?
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Wednesday, October 15th, 2014 AT 3:21 PM

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