Question about 1999 GMC Yukon

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Radiator leak my radiator is leaking from the top - a few inches from the cap what shoul i do??

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GENERALLY WATER FLOW WILL NOT GET TO THAT AREA ENOUGH FOR SEALER, BEST BET IS RAD SHOP, OR REPLACE, GOOD PRICE ON RAD-1-800-RADIATER, MY 3 CORE FOR JEEP WAS LESS EXPENSIVE THAN ANYWHERE I CHECKED- LOOKED FOR TWO MONTHS. MANY CO. WILL NOT RETURN E-MAIL OR PHONE

Posted on Oct 06, 2008

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Adding coolant little few times a month no leaks notice could it be degas cap. Head gasket going bad


It could be the radiator cap, a small leak in the radiator, or a small head gasket leak.
Many auto stores or shops can test the cap.
If there is a leak on the radiator, it will often cause a stain which you could look for.
If there is a leak into a cylinder, it will often cause a difference in the colour of the spark plug.

http://www.aa1car.com/library/how_to_fix_leaky_head_gasket.htm

May 06, 2016 | Cars & Trucks

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Fluids are staying in the overflow and not going back in the radiator after the car is shut off


There should be some coolant still in there when cold. The level only varies normally by a few inches from cold to hot and back. If there is no variation then your radiator is not holding pressure, possibly due to a leak in a cap, from a hose joint, from a split top radiator tank, or from a joint under the inlet manifold.
First thing is a pressure test

https://www.youtube.com/watch?v=96aQ5DD5y78



You can buy this kit but it should cost less to have it done at a radiator shop.

Feb 16, 2013 | 1995 Toyota Camry

2 Answers

How to i add coolant to a 1998 buick century


Open radiator cap and slowly put coolant in top(with car off and cold), fill till the fluid comes to top and let set for a minuite and continue to to fill till full, then start car with cap off and run till guage comes up half way and then guage will come down quarter way and have hot air running on high and feel the temp of air till its hot and then check level in radiator , then put cap back on and fill the resivore to the line it shows.if it was real low then you have a leak somewhere or internal leaks , whitch needs further diagnosis.

Feb 11, 2011 | Buick Century Cars & Trucks

1 Answer

Leaking radiator from engine cooling line on top of radiator. is there any way to re-seal?


Are you talking about the 2 inch water hose at the top ,or the overflow line about 1 half inch coming out of the radiator cap. If it is leaking from the radiator, replace the radiator, if it is coming out of the overflow, replace the radiator cap. If it is coming out of the top radiator hose then replace the hose

Oct 09, 2010 | 1997 Chevrolet Suburban

2 Answers

My 1999 Alero must have a leak somewhere because the thermostat gauge rises every few days. I put coolant in it at least 1 a week. I had a new water pump and thermostat put on it, but it is still...


CHECK AROUND WATER PUMP AREA.AND THERMOSTAT HOUSING FOR LEAKS.THE MECHANIC WHO PUT THE WATER PUMP ON MAY FORGOT TO PUT SEALANT ON BOTH SIDES OF THE WATER PUMP GASKET CAUSING LEAKS.LOOK AROUND THERMOSTAT HOUSING FOR LEAKING.IF THERMOSTAT SEAL WAS DAMAGE DURING INSTALLATION IT WILL CAUSE LEAKING.IF ALL LOOKS GOOD CHECK FOR COOLANT LEAKS AROUND RADIATOR .CHECK RADIATOR TOP AND BOTTOM HOSES FOR LEAKS AND CHECK HEATER PIPES AND HEATER CORES HOSES FOR LEAKS.IF ALL HOSES GOOD.CHECK FOR LEAKING CORE PLUGS.

Sep 26, 2010 | 1999 Oldsmobile Alero

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My radiator is leaking from the top. Is it just the seal on top or do I have to replace the radiator?


v6 or 4cyl?? Is it leaking from the radiator cap (4cyl only)?? If its not leaking from the cap and leaking from the radiator itself, whole radiator needs replacement.

Sep 24, 2010 | 1994 Toyota Camry

1 Answer

Started overheating on short drives.


Check radiator coolant level (while it's cooled off) and see if you notice and leaks while cap is off. If coolant isn't all the way to the cap then you probably have air pockets in the cooling lines. Top of radiator and fill reservoir to correct level. To remove air run the car for a few minutes with cap either on but not closed or get a funnel that fits right into the cap opening (same as oil size) and run car. It will rid off all air but coolant will rise after air is gone or if no air present. Let it cool down for an hour or so and level should be at cap level or below. Top off if necessary and put cap on tight. If you see a leak then fix it immediately.

Sep 03, 2010 | 1996 Audi A6

2 Answers

I have a leak coming from the upper radiator hose (someone else looked at my engine and told me this) the only problem is i have NO idea which the upper radiator hose is...some kind of diagram would be...


you should be able to see the leak being that the radiator hose is right there around the top where you would fill or check your radiator fluid. you can also google it if you absolutely need a picture like engine specs of your year make and model.

Apr 06, 2010 | 1999 Chevrolet Malibu

1 Answer

My car has been running hot for the past few days, and my heat completely stopped working yesterday, i checked the antifreeze and it was bone dry, there is a huge puddle in my driveway. Where could it be...


Check the following while running the engine, with coolant topped up:
The plastic reservoir bottle could be cracked check for leaks.
One or more of the hose-clamps aren't sealing well enough.Re-tighten or replace.
The radiator cap seal is torn or broken this would be obvious by steam and/or sputtering water at cap level.Replace cap.
The radiator might have sprung a leak or rusted through.Repair or replace radiator.
The cooling hoses may have perished.Replace.
Check around the water pump as one of it's seals or bearings me be worn out.Repair or replace.
Hope that helps! Good luck!

Mar 10, 2009 | 1998 Ford Taurus

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