Basicaly the blown gasket will allow exhaust into the cooling system and pressurise the cooling system and will stop the water from flowing.... This explains why the car is overheating assuming of course that it is a failed headgasket.
No if there is a blown head gasket, the problem is inide the engine, the oil wouldnt leak outside, it depends how the gasket is blown, somtimes it blows between the cylinder and waterway, or between cylinders. When the engine is off, water will enter the cylinder and make its way past the piston rings and find its way into the sump and mix with the oil.
You can remove the thermostat and run the engine safley to remove that from the problem.Car overheating...need help please?You may be having a pressure problem with your hoses and they may need to be changed because the antifreeze isn't circulating right. Go to Autozone.com they have alot of references.Car overheating...need help please?You obviously have a problem with pressure building up therefore you need to check your hoses for hard spots and i would suggest a system flush of the radiator and components do this by going to autozone and buying a bottle of superflush let the engine cool and when its cool pour the superflush in and idle the engine for 10 minutes then allow to cool and drain and then repeat the process 1 time with plain water and then after you have done this pour your antifreeze mixture in and take er for a spin.Car overheating...need help please?if your temperature gauge is in the red the engine is overheating and you probably need to replace the thermostat. i've never heard of antifreeze coming out of the cap but if it's doing it it's probably because there's too much pressure caused by the overheating and if you replace the thermostat that should stop it.Car overheating...need help please?Is the leak from under the cap or from a crack in the radiator itself?
Is the car overheating from loss of coolant, or with a full system?
You need to determine the source of the leak. It sounds like you might have a cracked radiator.
Follow up: It sounds like the neck of the radiator (where the cap attaches) might be damaged. If it's plastic you'll have to replace it, if metal, you might be able to bend it back into shape. You may also have an incorrect radiator cap. The leak is preventing the cooling system from pressurizing (liquids have higher boiling points under pressure) and causing the overheating.
Blown head gaskets do not always involve oil leaks. Sometimes the coolant leaks into the cylinder and is blown out of the exhaust, or it can leak onto hot engine parts and evaporate. Since your leak is at the radiator, I don't think you have a blown head gasket.Car overheating...need help please?There are many a reasons for the car to get over heated.such as the following.
1- If the fan belt is loose
2- If the timing of your car is wrong
3- if the water pump is not working
4- If the thermostat is jammed
5- If the radiator is clogged / has a leak
6- If the hose pipes / clips are old and worn out
7- It could also be back compression of the engine or the gasket leak.
8- Lack of Sufficient Engine oil also could be the problem
9- Last but not the least ,the radiator cap could be faulty and does need replacement.
Wishing you all the best in finding the most economic fault in one of the above points as mentioned for your car.
