water stuck in the reservoir, help needed Options

[chacha]

just like the title...all the engine coolant and water is stuck in the reservoir....it is not cycling...i have replace the thermostat but it didn't help, could it be something else...any ideas? ....it's not cycling as it should

This post has been edited by chacha: Feb 7, 2010 - 1:09 PM

[chacha]

you mean the radiator cap is bad? i have changed the water pump when i changed the timing belt....the water is in the filling the reservoir, but not being sucked back. hope that makes sense

[hurley97]

you mean the radiator cap is bad? i have changed the water pump when i changed the timing belt....the water is in the filling the reservoir, but not being sucked back. hope that makes sense

No, this doesn't make sense, not sure why you think there is an issue.

If there is too much coolant in the system, pressure builds up under the cap and pushes it out into the overflow reservoir. If you have an air pocket in the system the opposite effect will happen and it will suck back in what it needs. If the system is properly bled and there are not air pockets and no problems with the engine, you should be able to fill the overflow bottle to a certain level and it should stay just as you left it. The cooling system does not cycle the fluid from the overflow bottle during normal circulation.