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In most cases is is blown head gasket. The engine suckes air through the hole in the gasket and sends it to cooling system. You never know how long it gonna last.
Can also be caused by a defective pressure relief valve in the coolant reservoir cap. If it is the head gasket, you may also find you can smell combustion gases in the coolant. These won't smell the same as the exhaust gas though as the exhaust has been through the catalytic converter. If changing the cap fails to cure the problem, disconnect and isolate the ht leads or coil low tension wires and remove the pressure cap from the coolant tank. Get someone to turn the engine over on the starter motor while you look into the tank. If you see bubbles emerging in the coolant, it's probably the head gasket.
And a worse case scenario, a cracked head is possible.
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What cause engine to run hot on a PT cruiser?
Normal causes are low coolant and an inoperative radiator fan.Normal causes are low coolant and an inoperative radiator fan.
What is the indication if your radiator coolant shows bubbles in compression?
Indicates a bad head gasket or a cracked head.
How do you add coolant directly into radiator?
Don't! Most cars have a reservoir for radiator coolant ... add liquid to the reservoir. Opening the radiator cap introduces air into the sealed system ... you don't want air bubbles in the cooling system.
What causes excessive coolant in recovery reservoir?
Defective radiator caps or tubes
Ive replaced the water pump the radiator the thermostat so why does your car still heat up you have to add more water every two days?
Find out where you're leaking. Anything that causes the coolant to leak out is cause for concern. Fill the radiator. Leave the radiator cap off and start the engine. Watch for bubbles. If there are quite a few bubbles and the coolant wants to blow out even before the engine gets warm, you might have a head gasket problem.
How do you know if the exhaust is getting in the coolant When you have the radiator cap off before the car warms up there are lots of bubbles?
If your exhaust is getting in your coolant, you have a reeeeeeeeeeeeaaaaaaaaaaaaaaaaallllllllllllllllllyyyyyyyyyyyy major malfunction.
What causes Coolant indicator light to come on when you first start your car?
Check to coolant level in the coolant recovery tank and radiator when engine is cold
What causes the radiator coolant to turn to strawberry milk?
Possible trany cooler leak
What are the causes for engine overheating?
Lack of coolant, lack of coolant flow, air in cooling system, lack of airflow over radiator,........
What are the signs of a cracked engine head?
Loss of coolant with no visible leak. White smoke out the exhaust. Excess pressure and bubbles in radiator.
Is the water reservior just for water or for coolant for the radiator?
Radiator coolant.
What are causes of Coolant leak?
Broken or split hose Radiator leak heater core leak
