Why does black liquid substance come out of my exhaust pipes?


My 66 ford ltd seems to have liquid coming from the exhaust at idle. With it is a black carbon residue in it. I know the car sat for a couple years without use. Does anyone know what this is and how to get rid of it?

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6 thoughts on “Why does black liquid substance come out of my exhaust pipes?

  1. Stale gas. Improper carb air / fuel mixture. Carb screws may need to be re adjusted. Could try a can of sea foam with clean out the carbon in youre engine and carb.

  2. That's just the soot in the pipes. And when you start it the moister in the exhaust mixes with it and drips.Short trips and starting it for very short periods of time make it worse. Get it out and drive it for extended period of time will make it better but it will never go away……………..&&&

  3. my best guess with out seeing it, but knowing old trucks the way I do is that there is water in the exhaust pipes which is pretty normal mixing with carbon build up from an old truck. That truck likely has a manual choke and you can get carIbon build up over time easily If it evaporates and goes away thats your clue that its water. If its oil it will not evaporate and you would be losing oil in the engine too , but I dont think thats the case if it is running good otherwise great. Those old trucks took almost a full choke in the morning but once it got going it was a good running son of a gun with few quirks . I always loved those old fords. I dont know what engine you have but rebuilding the carb will help it run better or replacing it altogether with a newer one is a better idea, this will help the fuel mileage and clean the crap out of the engine from the old carb. Keep the oil clean in it and that will help a lot too.l good luck

  4. Usually…..and I repeat USUALLY – it is condensation and dirt from the exhaust system. If it is, it's nothing but dirty water. The next time you see it, stick a finger in it and see if it feels oily. Another clue would be to look where the car is usually parked. Dirty water will depending on the climate you're in either evaporate fairly quickly or freeze – engine oil or anti freeze won't. If it's oil, you'll see black smoke coming out of the tailpipe when you drive; if it's anti freeze, you'll see white smoke. Check the levels of both and make sure that neither of both are vanishing at a fairly quick rate.
    It's impossible to tell without seeing the car what the issue is. But I'm betting that it's nothing more than the hot exhaust coming thru cold pipes causing condensation.

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