Air in cooling system? -tanngo
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From: Puerto Rico
Air in cooling system? -tanngo
So, I just received an email from our friend Luigi (tanggo) from Argentina. He asked me the following:
Here's the translation:
Originally Posted by tanngo
Hola amigo , necesito una ayuda y me cuesta hacerlo en idioma inglés , podrías ayudarme ?
Hoy salí a la ruta con 2001 xkr , 20 mil millas . Termostato cambiado hace unos meses . Revise los niveles y estaban Ok . Me llamo la atención que en frío al destapar refrigerante bidón sentí un puff de presion ... En frío . Nivel Ok . Le hice 30 km en ruta fuerte ... Y me encontré con luz refrigerante bajo ..recién comprobé y bajo , Datos adicionales .. Hace unos días solucione una pequeña fuga por las mangueras que entran a reservorio , cambie las abrazaderas , termostato nuevo hace 1000 millas , pérdidas no veo ninguna .. Mi pregunta es ... Es normal escuchar ese puff en frío .. ?? Tengo aire en sistema ? Gracias
Hoy salí a la ruta con 2001 xkr , 20 mil millas . Termostato cambiado hace unos meses . Revise los niveles y estaban Ok . Me llamo la atención que en frío al destapar refrigerante bidón sentí un puff de presion ... En frío . Nivel Ok . Le hice 30 km en ruta fuerte ... Y me encontré con luz refrigerante bajo ..recién comprobé y bajo , Datos adicionales .. Hace unos días solucione una pequeña fuga por las mangueras que entran a reservorio , cambie las abrazaderas , termostato nuevo hace 1000 millas , pérdidas no veo ninguna .. Mi pregunta es ... Es normal escuchar ese puff en frío .. ?? Tengo aire en sistema ? Gracias
Originally Posted by Translation
Hi pal. Today I had a trip on my '01 XKR with 20k miles. I had changed the thermostat a few months back. I checked the coolant levels and they were ok. What caught my attention is that when I opened the coolant reservoir when the car was cold, I felt a puff of pressure. The level was ok. After 30 km of hard driving (I think that's what he means), I was greeted by the low coolant message. I checked the coolant level and indeed it was low. Additional data: a few days ago I fixed a small leak on the hoses that go into the reservoir, I changed the clamps and I swapped in a new thermostat about 1000 miles ago. My question is: Is it normal to hear a puff when engine and cooling system is cold? Could I have air in my cooling system? Thanks.
Joined: Dec 2011
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From: Durham, UK
The cooling system is low volume and high circulation rate to achieve a fast warm up.
With the thermostat closed, coolant returns directly to the pump through the bypass on the thermostat housing. With the thermostat open, coolant returns to the pump via the radiator.
As the cooling system warms up, coolant expands and excess goes from the Expansion Tank to the Atmospheric Recovery Bottle in the front wing under positive pressure. As the system cools down, the coolant contracts and fluid is drawn back from the Atmospheric Recovery Bottle into the Expansion Tank to maintain the correct level.
With a completely cold engine, there should be no excess pressure in the system.
Graham
With the thermostat closed, coolant returns directly to the pump through the bypass on the thermostat housing. With the thermostat open, coolant returns to the pump via the radiator.
As the cooling system warms up, coolant expands and excess goes from the Expansion Tank to the Atmospheric Recovery Bottle in the front wing under positive pressure. As the system cools down, the coolant contracts and fluid is drawn back from the Atmospheric Recovery Bottle into the Expansion Tank to maintain the correct level.
With a completely cold engine, there should be no excess pressure in the system.
Graham
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Joined: Feb 2010
Posts: 248
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From: argentina
ok, I understand .. is the first time I feel a puff ... slight air pressure, water movement .... after driving and low liquid .. google traductor
español --- ok , entiendo , es la primera vez que siento puff... al abrir la tapa . leve aire , agua en movimeinto , luego conducir unos km y liquido bajo nivel . no veo fugas , termostato nuevo , hace poco cambiar abrazaderas por pequeñas fugas en tanque de expansion ...
gracias giandaniel .
español --- ok , entiendo , es la primera vez que siento puff... al abrir la tapa . leve aire , agua en movimeinto , luego conducir unos km y liquido bajo nivel . no veo fugas , termostato nuevo , hace poco cambiar abrazaderas por pequeñas fugas en tanque de expansion ...
gracias giandaniel .
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