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2005 Honda Element – mystery air in engine cooling system

#895800
2005 Element
Wilf
Participant

[quote=”nightflyr” post=204308]The T stat is inside a closed loop.
Unless there is a crack in the housing that should cause an issue.
The only other situation in which air bubbles can occur is due to cavitation.
But if this was an issue due to design, there would be many more reports of it happening.[/quote]

Cavitation – perhaps in the block heater or heater control valve?
Or something else?

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