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1980
4sp
96k miles
all original motor, trans and exhaust
So I was letting the car warm up to take her for a ride this evening. Something came up and I had to cancel my plans. Turned the car off and went inside to deal with, well, I had to work on my honey do list!!!
Anyway, just walked out to the garage to get something and noticed this on the garage floor. I didn’t see any smoke while it was warming up. I had it running for a little over 5 min before I shut it off.
Could this be from the catalytic converter?
Oil was changed before I put her up for the winter. When l filled her up with gas last weekend I did add sea foam to the tank.
Looks to me like the sea foam is doing it’s job of breaking down the carbon deposits, although it makes an ugly mess of whatever is directly behind your car.
Probably just condensation in the exhaust and it gets blown out. Most cars do it due to weather changes if it’s cold out. Nothing to worry about besides the mess.
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Thats nothing, just the hydrocarbons and water left over from the combustion process. Mine would do that more or less depending on the relative humidity and if it was heated up before I out it away. Dont worry about it but it does leave a mess. Soapy water or simple green will clean it up
I put Sea Foam in my dad’s car after he died to get it running again and it made a hell of a mess. Looked just like your pics, just a lot worse! Now it just leaves condensation behind it at idle.
Should I be concerned........
