Question about 1997 Buick Skylark

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Leaking radiator tank

I have coolant leaking from the tank

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  • Anonymous Apr 18, 2009

    leaking antifreeze on floor of car, constantly have to refill antifreeze

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If you mean header tank it needs to be replaced

Posted on Feb 16, 2009

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Posted on Jan 02, 2017

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1 Answer

Why is it that overflow tank is full, while radiator is low on coolant; coolant in tank not flowing back into the radiator?


You have a coolant leak. The engine gets hot and pushes coolant out under pressure into the overflow tank.When it cools, the volume of coolant decreases, the pressure drops to the point that it becomes a vacuum. The vacuum pulls in air more easily than coolant. It's thinner. So, you keep losing coolant from the radiator which makes the engine run hotter, each time until it eventually overheats and does damage. You need to have the cooling system pressure tested. The leak will show up. Usually, it's a loose hose clamp or cracked radiator tank high up, which makes it had to see the coolant because it doesn't leak much and it boils off leaving little or no evidence. Fill the system completely before pressure testing. Remember, checking the overflow tank means nothing when checking coolant level. There's no short-cut to checking the coolant level, take the radiator cap off when cold to accurately check level. Read the safety precautions on the car but always check when the engine is cold. NEVER HOT.

Nov 01, 2017 | Cars & Trucks

1 Answer

Why coolant level in refill tank drops with no apparent leak?


Hi Ayaz
if there no leak detected that means the radiator cap is not holding the pressure, that cause the coolant to travel to the expansion tank and flood out, then when engine cool down, it will suck the coolant back to the radiator and leave the refill tank empty.
Replace the Radiator Cap

Good luck

Nov 22, 2015 | 2006 Toyota Previa 2.4

1 Answer

Coolant leak,


Strange but do you think a hose has a pin hole that is spraying coolant up?
check the inner hood for over spray.
Clean the engine then drive it & look for more obscure places that might be wet.

Feb 19, 2014 | 2007 Dodge Nitro SXT

1 Answer

My Pontiac is leaking antifreeze from the breathing hose on the coolant tank, please help


I'm not completely clear on what you mean, but here are some things to check.
1. Check the hose from the radiator neck to the overflow tank for cracks or leaks. If it's leaking the tubing can be purchased at an auto parts store. It's very inexpensive.

2. If it's leaking a lot into the over fill tank this could be an indication that your radiator cap is leaking at the seal, allowing coolant to bypass the spring on the cap and through the hose into the coolant overflow tank. Replace the radiator cap, these are about $10.

Nov 23, 2012 | Cars & Trucks

2 Answers

Coolant recovery failure


Check the hose going to the expansion tank, That it is not pluged up.

Nov 03, 2012 | Cars & Trucks

1 Answer

I have a radiator leak on the bottom of the radiator of my 2000 Chevrolet z71 1500. I don't know where it is coming from exactly. It is a so drip and I can see green coolant on the ground.


Coolant leaks can sometimes be difficult to locate the exact origin of the leak. That is why proffessional technicians use pressure testers, bright flashlights, inspection mirrors, and in some cases even borescopes to locate the cause.

With that said, I would say that if you have a "radiator leak" and it is "on the bottom of [your] radiator" my first guess is that it is coming from the radiator itself....check the area of the radiator where the plastic tanks are crimped to the cooling tubes (main radiator core). Sometimes the fittings in the tanks leak where the transmission cooler lines connect.

I have also seen leaking radiator caps misdiagnosed for a leaking radiator....Sometimes they will leak and the antifreeze will run along the sides of the radiator and "mimick" a radiator tank leak. Remember, the coolant almost always travels DOWN and REARWARD. Sometimes it goes way to the left or the right, but it still goes down and back from there.

A bright flashlight and an inspection mirror will verify most leaks. You may also want to detach the fan shroud and move it back for better inspection of the radiator. - start where you can see the coolant and follow the trail upward....

May 13, 2012 | 1999 Chevrolet K1500

2 Answers

Looking for the fill plug on a 200 dodge darango 4 wheel drive front punkin all i see is a vent pipe


COOLANT-ADDING ADDITIONAL
Do not remove radiator cap to add coolant to system. When adding coolant to maintain correct level, do so at coolant reserve/overflow tank. Use a 50/50 mixture of ethylene glycol antifreeze containing Alugard 340-2 y and low mineral content water.
Remove radiator cap only for testing or when refilling system after service. Removing cap unnecessarily can cause loss of coolant and allow air to enter system, which produces corrosion.

COOLANT LEVEL CHECK
The cooling system is closed and designed to maintain coolant level to top of radiator.
WARNING: DO NOT OPEN RADIATOR DRAINCOCK WITH ENGINE RUNNING OR WHILE ENGINE IS HOT AND COOLING SYSTEM IS UNDER PRESSURE.
Remove radiator cap. The coolant level should be to top of radiator. If not, and if coolant level in coolant recovery bottle is at ADD mark, check for:
  • An air leak in coolant reserve/overflow tank or its hose
  • An air leak in radiator filler neck
  • Leak in pressure cap seal to radiator filler neck
TRANSMISSION and OIL LEVEL CHECK TUBES
pctech1_27.jpg

Mar 04, 2011 | 2000 Dodge Durango

1 Answer

I have 2001 alero. Yesterday the coolant light came on and the engine just died. Any ideas maybe fuel pump or timing belt or could it be the water pump


IF LOW COOLANT LIGHT CAME ON ENGINE SHUT OFF BECAUSE IT GOT TOO HOT AND OVER HEATED.WHEN YOU HAVE LOW COOLANT.YOU COULD HAVE LEAKING RADIATOR.YOU COULD HAVE LEAKING RADIATOR HOSES AND WATER PUMP. ADD MORE COOLANT IN CAR RADIATOR UNTIL YOU AT FULL COLD MARK ON THE OVER FLOW COOLANT TANK START THE CAR LET IDLE UNTIL ENGINE GET OPERATING TEMPERATURE.RAISE YOUR HOOD LOOK FOR LEAKS THE RADIATOR PRESSURE WILL PUSH COOLANT OUT WHERE LEAKS COULD BE.LOOK AROUND RADIATOR AND COOLANT HOSES.LOOK AT WATER PUMP.IF YOU SEE COOLANT LEAKING AT WATER PUMP REPLACE IT.

Feb 26, 2011 | 2000 Oldsmobile Alero

1 Answer

My coolant is filling up with transmition fluid why?


Transmission fluid is sometimes cooled by way of a seperate internal tank within your radiator, the fluid is passed through hoses and steel or aluminum tubes from the transmission to the radiator, as the fluid flows thru the internal tank within the radiator it transfers heat from the fluid into the coolant within the radiator which then exchanges the heat from the coolant thru the radiator fins and into the ambiant air around the radiator.
That being said, if the internal transmission fluid tank or the connections at or within the radiator develop some sort of leak, the two fluids(coolant and transmission fluid) will mix and will show up where it shouldn't be! You may have an internal leak within the radiator, which means the radiator needs to be replaced.
Good Luck!

Aug 02, 2010 | 1996 Dodge Caravan

1 Answer

Internal engine is leaking radiator fluid


If you are leaking coolant from the radiator then most likely it is on the driver's side of the radiator and there is a crack in the end tank. This is a common problem and requires the radiator to be replaced.

If you are talking about a leak inside the engine then some signs to look for is a chocolate milkshake look in the coolant expansion tank and then a coolant smell and look on the oil dipstick. If either of those is the case you have a blown head gasket. But my money is on the cracked radiator end tank.

Feb 22, 2010 | 1999 Saturn SL

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