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Discussion Starter · #1 ·
What’s up guys. I have a 2012 Cadillac ctsv and I didn’t know that the intercooler (brick) failed. Had a crack in it, added coolant in the tube and it all came out of the exhaust. Changed the brick to a reinforced one Luckily, everything is fine starts right up, idles normally, temps stay normal. Just that there is smoke coming out the exhaust after driving it a bit. Could it be a possibility that there is still hella coolant in the exhaust system that heats up and smokes out? I put a LOT of coolant in that tube before I changed it lol. Mufflers are stock. Appreciate guys
 

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Discussion Starter · #7 ·
You could take your supercharer lid off and make sure its not pooled anywhere...
We pulled it off and cleaned whatever was in there and put the new brick in. Also I have no cats so I think the coolant just rushed down to the muffler canisters and filled up in there ? Possibility brother ?
 

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Checked oil, still clean and clear. I literally dumped in almost a whole gallon down the t fill tube. I personally think that there is just still so much coolant in the exhaust system
Get your cooling system pressure tested and confirm your cylinder heads are not warped and/or gaskets are ok.
 

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What color smoke? Does it smell sweet? Can you rock your car back and forth and hear water slosh around in the mufflers?
Yes? Yes? Yes? An Italian tuneup should fix it, one way or the other...
 

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"Smoke" isn't coolant. Coolant is steam. It has a distinct smell that is totally unlike petroleum or oil smoke. How does the "smoke" smell? If it smells like burning oil it's not coolant.

Water isn't going to make it through the engine, whatever gets in to a cylinder turns to steam when the cylinder fires and it goes out the tail pipe as steam because there's no place cool enough for it to condense. Any water that was left in the top of the motor would "cook off" after the first hot shut down. If the motor runs fine for a while and then it starts to emit whitish "smoke" that doesn't smell like oil, you've got another water leak someplace. In my experience, this kind of issue can be caused by a head gasket or even a cracked head. But if the blower's intercooler starts to leak when hot, that'd look pretty much the same.
 

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Discussion Starter · #12 ·
"Smoke" isn't coolant. Coolant is steam. It has a distinct smell that is totally unlike petroleum or oil smoke. How does the "smoke" smell? If it smells like burning oil it's not coolant.

Water isn't going to make it through the engine, whatever gets in to a cylinder turns to steam when the cylinder fires and it goes out the tail pipe as steam because there's no place cool enough for it to condense. Any water that was left in the top of the motor would "cook off" after the first hot shut down. If the motor runs fine for a while and then it starts to emit whitish "smoke" that doesn't smell like oil, you've got another water leak someplace. In my experience, this kind of issue can be caused by a head gasket or even a cracked head. But if the blower's intercooler starts to leak when hot, that'd look pretty much the same.
Water made its way through the crack in the brick and I revved it hard when it happened. Lots of coolant came out the pipes. And my guess there’s is still a lot left In the mufflers possibly

What color smoke? Does it smell sweet? Can you rock your car back and forth and hear water slosh around in the mufflers?
Yes? Yes? Yes? An Italian tuneup should fix it, one way or the other...
I didn’t think of doing that, I will test that tomorrow and let you know!

I didn’t think of doing that, I will test that tomorrow and let you know!
Like the other guy said it’s like steam so to say.. smells sweet
 

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Gotta be honest, I had to google ‘Italian tune-up’. Good stuff, I need one of those as well.
Me too. I use to do that with my Mom's car when she would call me and tell me it was running bad... LOL

Just never knew there was a term for it.
 

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2011 CTSV Coupe M BLK LSX376-B15
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Me too. I use to do that with my Mom's car when she would call me and tell me it was running bad... LOL

Just never knew there was a term for it.
Take it out and make sure to get up to temp, drive awhile. I advise that you not remove anything at this time. Keep an eye on the fluid level, if you notice a drop in fluid, it may be that the o-rings are not seated, hopefully you replaced the o-rings when you installed the new brick.
 

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You could have easily hydrolocked and bent rods if enough water went through the engine that it came out the other side without turning to steam...
 

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Discussion Starter · #16 ·
Take it out and make sure to get up to temp, drive awhile. I advise that you not remove anything at this time. Keep an eye on the fluid level, if you notice a drop in fluid, it may be that the o-rings are not seated, hopefully you replaced the o-rings when you installed the new brick.
Yes o rings were replaced as well. Drove around for a couple mins and temps stayed normal.
 

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Discussion Starter · #17 ·
Hey fellas. So far tried the Italian toon up and so far no smoke coming out as of now. Should check it out more tomorrow. Keep y’all updated
 

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You could have easily hydrolocked and bent rods if enough water went through the engine that it came out the other side without turning to steam...
Yeah. That's my thinking. An engine isn't a water pump. Enough water to get through the motor and collect in the exhaust would be enough water the engine would have stopped running before that could happen. Think about how much compression ratio changes with just a small reduction in deck height. A 1/4" of water in a cylinder is going to be enough to break things. Less than that probably isn't going to survive the combustion process as a liquid. Something else is probably leaking water/coolant. The fact that it takes 15 minutes suggests it's at the front of the car. The exhaust system is hot long before then. But 15 minutes of idle will just be getting the engine to temp...
 
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