SOURCE: air blown threw overflow tube, well it hurt anything
If your car is overheating and you are getting alot of air in the overflow tank. The air is caused by a blown head gasket the air is compression from the motor. Remove the spark plugs the one that is real clean is the one that the head gasket is leaking into. You should also be seeing white smoke out the tailpipe that is the antifreeze burning in the cylinder. When it burns it will clean the cylinder and the spark plug.Good luck I just had the same problem with a 3.1 in a Cutlass
SOURCE: why is the coolant coming out of the overflow bottle
make sure there is no coolant leak. is the radiator fan running? it should run whenever the A/C is on. if not, that will be the problem. Engine running, A/C on, see if the fan is running, if not get a long rod, broom handle ect and tap on the motor, if it starts to spin or starts running, replace the fan assy.
SOURCE: overheating
Some bubbling may be normal. If it is overheating there may be air in the system and the hot coolant is not reaching the sensor, if this is the case you should bleed air from the system.
Coolant: Service and Repair
ENGINE COOLANT REPLACEMENT
1. Remove the radiator cap, the radiator drain plug and the rear heater unit drain plug (if equipped).
2. Drain the coolant into a container.
3. Flush the cooling system with water until all traces of color are gone.
4. Let the system drain completely.
5. Tighten the radiator drain plug and the rear heater unit drain plug (if equipped).
Caution:
^ The engine has aluminum parts that can be damaged by alcohol or methanol antifreeze. Do not use alcohol or methanol in the cooling system.
Use only ethylene-glycol-based coolant.
^ Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will cut down on the coolant's effectiveness.
^ Engine coolant will damage paint. If engine coolant does get on a painted surface, rinse it off quickly.
6. Refer to the following chart and select proper mixture of the water and coolant.
Antifreeze solution mixture percentage
7. Pour the coolant into the reservoir up to the FULL mark.
8. Tighten the radiator cap.
Caution: e If the coolant temperature becomes too high, stop the engine to prevent it from overheating.
9. Start the engine and let it idle until the cooling fan operates.
10. After engine warms up, perform the following steps.
1. Run the engine at 4,000 rpm for 1 minute.
2. Run the engine at idle for 1 minute.
3. Repeat steps (1) and (2) several times.
4. Turn on the main and rear heaters and verify that heat is coming from heater vents.
11. Stop the engine and wait until it is cool.
12. Inspect the coolant level. If it is low, repeat Steps 7-12.
13. Verify there is no coolant leakage.
SOURCE: water comes out of the over flow bottle(i checked the cap)
make sure you dont over fill the radiator bottle past max, something else to try is run the system with out the cap on for a few minutes at idle to expel any air pockets in your cooling system.
Testimonial: "Thank you ill give it a go hopefully that works xxxxxxxxxx"
SOURCE: 2003 dodge stratus bubbling in the overflow, not overheating
May be a bad radiator cap allowing air through
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