Inline Vent / Check valve to let air through but not water?
Discussion
Hi All,
I'm in the process of looking to buy a 2019 Porsche Cayenne.
As always, part of my vehicle buying ritual is to google it to death, and research all of the potential issues to see what I'm getting myself into.
The Porsche has plenty, as it happens.
Anyway, I came across this piece of marvelous engineering, which has apparently is an issue with Cayennes & Audi Q7s -
https://youtube.com/shorts/d69wrVczUw4?si=KOLH0d5y...
Basically, the O-ring fails, allowing the vacuum system to suck the coolant through everything creating havoc along it's way.
I have no issue with replacing the water pump as a preventative measure, however it is a fundamentally flawed design, and will fail at one point again.
To prevent this, my thought was if you could extend the vacuum lines, and vertically install a floating ball type check valve, this would allow the vacuum to travel in either direction, but if the seal failed and coolant was sucked up the line, the valve would close, preventing further damage.
I have had a good root around on the internet and can't really come up with anything, but I'm sure there must be something out there.
I did see this, which could work, however the drain would likely need plugged as the vacuum might draw air through it.
Water Trap Auto Cut Off -
An inline smaller valve would be a neater solution, similar to a fish tank check valve, anyone have any ideas?
I'm in the process of looking to buy a 2019 Porsche Cayenne.
As always, part of my vehicle buying ritual is to google it to death, and research all of the potential issues to see what I'm getting myself into.
The Porsche has plenty, as it happens.
Anyway, I came across this piece of marvelous engineering, which has apparently is an issue with Cayennes & Audi Q7s -
https://youtube.com/shorts/d69wrVczUw4?si=KOLH0d5y...
Basically, the O-ring fails, allowing the vacuum system to suck the coolant through everything creating havoc along it's way.
I have no issue with replacing the water pump as a preventative measure, however it is a fundamentally flawed design, and will fail at one point again.
To prevent this, my thought was if you could extend the vacuum lines, and vertically install a floating ball type check valve, this would allow the vacuum to travel in either direction, but if the seal failed and coolant was sucked up the line, the valve would close, preventing further damage.
I have had a good root around on the internet and can't really come up with anything, but I'm sure there must be something out there.
I did see this, which could work, however the drain would likely need plugged as the vacuum might draw air through it.
Water Trap Auto Cut Off -
An inline smaller valve would be a neater solution, similar to a fish tank check valve, anyone have any ideas?
Maxdecel said:
Vorsprung Durch Tecknic !
Is it possible to disable the operation ? Stop the action and the seal will no doubt have a much longer life.
I assume it only activates when coolant is cold so warm up times may be extended a tad but that's a small price to pay (IF .. I'm correct?)
People have apparently tried this, buy pulling the line off and plugging it throws up the EML as it knows the engine takes too long to warm up.Is it possible to disable the operation ? Stop the action and the seal will no doubt have a much longer life.
I assume it only activates when coolant is cold so warm up times may be extended a tad but that's a small price to pay (IF .. I'm correct?)
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