Coolant Leak - Need 2nd Opinions

[Spannerhead]

Amazing introduction to the Porsche owners community. Wow.

Guys. The tank is compromised. I get it. I will replace it.

BUT. Do the drips in front of the rear wheels (a long way from the tank) point to a bad tank? Or is there a hose closer to the drip location that could be leaking?

I'd feel pretty stupid if I replaced the tank only for the car to still be leaking from somewhere else. That's what I'm trying to determine.

[JFP in PA]

Originally Posted by Spannerhead

Amazing introduction to the Porsche owners community. Wow.

Guys. The tank is compromised. I get it. I will replace it.

BUT. Do the drips in front of the rear wheels (a long way from the tank) point to a bad tank? Or is there a hose closer to the drip location that could be leaking?

I'd feel pretty stupid if I replaced the tank only for the car to still be leaking from somewhere else. That's what I'm trying to determine.

If you are that concerned, add some UV dye to the cooling system, after circulating it for a while, pressurize the system with something like the Stant system test tool, put the car up in the air and look for where it is coming from with a UV light.

[Homeoboxter]

A less sophisticated but simpler test is to pour about a quart of water into the trunk below the coolant reservoir. You will need to clean up that mess anyway. Then you just follow the route. If you see the water accumulate at the same places where the coolant did before, you can be almost 100 percent sure you have only one source of a leak. Good luck!

[78F350]

Originally Posted by Spannerhead

Amazing introduction to the Porsche owners community. Wow.

Guys. The tank is compromised. I get it. I will replace it.

BUT. Do the drips in front of the rear wheels (a long way from the tank) point to a bad tank? Or is there a hose closer to the drip location that could be leaking?

I'd feel pretty stupid if I replaced the tank only for the car to still be leaking from somewhere else. That's what I'm trying to determine.

There are multiple hoses that connect to the coolant tank at the firewall. You will have to disconnect them all when you replace the tank that is clearly failing. Those hoses are short and connect to metal tubing that leads to the front of the right rear wheel. Inspect them when you replace the tank. They rarely fail.



Using 'flexible hose clamp pliers' and ensuring that spring clamps vs screw clamps are used will make the job go much better.