Catalytic converter water

[Chad23jl]

My 2500 has a small port on the back side of the CC that runs off a lot of water after running even for a short time. Is this normal. My old Ford had quite a bit that came from the exhaust itself but this just seemed excessive.

[03 Cobra]

On 6/7/2021 at 12:43 AM, Chad23jl said:

My 2500 has a small port on the back side of the CC that runs off a lot of water after running even for a short time. Is this normal. My old Ford had quite a bit that came from the exhaust itself but this just seemed excessive.

 

That doesn't sound right.  Can you post a few pics so we can see the port you are describing?  And maybe how much water is coming out?

[Chad23jl]

It only seemed to do it a couple of times and has now stopped but I will take a pic of the spot that the water came from. 

[Earl Cordova]

Water is a natural by product of the catalytic converter doing it thing.

Once the converter is at it's normal operating temperature, the water is evaporated to the point you can't see it.

 

That is one of several reasons why a car needs to run at normal operating temps for a while.

Otherwise the collected water never burns off and rusts the exhaust system from the inside out.

[03 Cobra]

2 minutes ago, Earl Cordova said:

Water is a natural by product of the catalytic converter doing it thing.

Once the converter is at it's normal operating temperature, the water is evaporated to the point you can't see it.

 

That is one of several reasons why a car needs to run at normal operating temps for a while.

Otherwise the collected water never burns off and rusts the exhaust system from the inside out.

 

The interesting part is he said it was coming out of the cat and not out of a muffler with a drain hole or out of the tailpipe.