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Car started overheating. No visible leaks - 2004 Mazda 6

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Ceck radiator , fan ,thermostat,

Posted on Nov 11, 2010

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Posted on Jan 02, 2017

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I have a 2001 chevy blazer 4wd when driving my vehicle I start to smell as if my car is starting to overheat my gages are showing normal and there are no visible signs of overheating my windshield and


If you smell steam/water/antifreeze inside the vehicle, then most likely you have a heater core issue. If it is more 'overheating' smell outside of the vehicle, it could be overflow container leaking on hot parts, leaking hose, radiator leak, etc.

Jan 26, 2015 | 2001 Chevrolet Blazer

1 Answer

Loss of antifreeze see no leaks no mixing in oil.


Ok,
No coolant leaks visible, no coolant in the oil, so

- a possible leak to a cylinder, and thence down the tailpipe. Normally this would cause overheating, but perhaps the car is handling what heat there is. There is a simple test for combustion gases in the coolant, so you could get that done

https://www.youtube.com/watch?v=1_SIwHMLmkM

- a possible leak into the inlet manifold. This would normally cause rough idle on startup, until the engine was warm enough to cope with it. Before starting cold sometime, take out each plug in turn and see if any water is visible in the cylinder

- a restriction or blockage in the hose to the overflow tank, so the engine vents coolant when hot, but does not recover it on cooling. This is not very likely though.

- not every coolant leak is obvious, so if all above checks out, you then have to start looking at out-of-the way spots, like the water pump weephole.

Oct 18, 2014 | Cars & Trucks

2 Answers

Steering gone and overhaeating


It's leaking out of your water pump.It is leaking while you are driving,when you stop,it's all gone,on the highway.

Aug 31, 2017 | 1999 Volkswagen Cabrio

1 Answer

I Have a 2005 Hyundai Elantra Thats losing water, overheating and wont start when its hot. No leaks no white smoke.


If no leaks, I would pressure test the system with a view to replacing the head gasket.

Aug 22, 2017 | 2005 Hyundai Elantra

1 Answer

Volvo has been overheating put coolant in but it drains somewhere no leaks are visible now car wont start


This is NOT a good thing...Better check you engine oil. When engine coolant disappears without any signs of it leaking on the ground, it is usually because it is leaking into the crankcase via a blown head gasket, blown intake manifold gasket, or cracked cylinder head. If your engine oil looks milky, like a chocolate milk shake, it is time for major engine repair or replacement.

May 20, 2012 | 2004 Volvo S40

1 Answer

Car losing antifreeze water, no visable leaks, car overheating. 1998 buick century, v6


if you have no visible leaks and it is overheating then it sounds like you have a head gasket leak internally.the coolant is going some where .get the cooling system pressure tested to make sure you don`t have a leak externally.if the coolant is not leaking out the radiator then this indicates the thermostat is not stuck.what ever the problem is change the thermostat at the time of repair.

Mar 22, 2011 | 1998 Buick Century

1 Answer

Overheating...keep losing cooloant but i do not see any visible leaks.


check engine oil for over full level and for discoloration of oil indicating coolant in oil
also check inside floor of car to see if heater core is leaking

Dec 16, 2010 | 1994 Pontiac Grand Am

1 Answer

Overheating from leak not visible


Hook up a cooling system pressure tester. If you have a pin point leak, the pressure from the tester will shoot coolant out of the leaking area.

May 07, 2009 | 2003 Honda Civic

2 Answers

90 Subaru Legacy overheating


1988 subaru clean out radiator for summer diving

Mar 14, 2009 | 1990 Subaru Legacy

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