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2005 Honda Element – mystery air in engine cooling system

#895793
2005 Element
Wilf
Participant

[quote=”nightflyr” post=204300]Has anyone done a combustion gas test?
Something else..
if there is – A small leak in the lower driver side of the radiator is noted, perhaps 2 ml per hour of hard driving.
This doesn’t show up in a pressure or vacuum test.
If coolant can leak out air can leak in.[/quote]

That is what I thought. Mechanic seems to think it would suck back from the reservoir before coming in through that small leak (pin hole?).

I should add, I did replace rad cap and that also made no difference.

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