Author Topic: 85 degrees outside, Condisation from both exhust pipes ?  (Read 933 times)

Offline Bill Balkie 24172

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  • 1957 Biarritz / 2009 CTS
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85 degrees outside, Condisation from both exhust pipes ?
« on: August 15, 2009, 09:17:39 PM »
It is about 85 degrees in New Jersey tonight . My 1957 Cadillac runs very well , however I went for a 20 minutes cruise ,left the car idling in the driveway  for about 3 minutes tonight ,i noticed both pipes dripping condisation . I am not sure what is going on. any thoughts on this , should i be concerned ?

Thanks,
  Bill
Bill Balkie
1957 Biarritz
2009 CTS

Offline Mike Josephic CLC #3877

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Re: 85 degrees outside, Condisation from both exhust pipes ?
« Reply #1 on: August 15, 2009, 09:47:54 PM »
If you see this only when the car is just warming up to operating temperature -- that's pretty normal.
I would not be concerned.  I've seen this for years on all of my older cars. There is always some condensation (from the crankcase, for example) that has to be "blown out" during the warm up cycle.

However, if you see it on an ongoing basis, during normal driving, then I would get your cooling system pressure tested and checked for possible head gasket problems.

Mike
1955 Cadillac Eldorado
1973 Cadillac Eldorado
1995 Cadillac Seville
2004 Escalade
CLCMRC Museum Benefactor #38
Past: VP International Affiliates, Museum Board Director, President / Director Pittsburgh Region

Offline The Tassie Devil(le)

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  • Name: Bruce Reynolds
Re: 85 degrees outside, Condisation from both exhust pipes ?
« Reply #2 on: August 15, 2009, 09:53:10 PM »
20 minutes isn't long enough to get rid of condensation.

Try at least 1 or 2 hours at highway speeds as a minimum.

The reason Exhausts rust out is that they don't get hot enough to remove the condensation during a normal drive to work.

Bruce. >:D
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'74 Chris Craft Gull Wing (SH)
(Past President Modified Chapter)

Offline Roger H

  • Posts: 105
Re: 85 degrees outside, Condisation from both exhust pipes ?
« Reply #3 on: August 17, 2009, 03:33:10 PM »
One other explanation is that water is formed during normal combustion.  HC(hydrocarbon or gasoline) combines with O (Oxygen)
and make H2O, and also  other more harmful molecules.  Once the car is hot this normal formation of water is not visible.  When cold however it condenses  into water drips out the tail pipe.  In perfect combustion only water and co2 would be formed.
Roger Hundtoft
1936 Fleetwood 8509
Lynnwood Wa

Offline Bill Balkie 24172

  • Posts: 787
  • 1957 Biarritz / 2009 CTS
    • CLC Member
      CLC Member #24172
Re: 85 degrees outside, Condisation from both exhust pipes ?
« Reply #4 on: August 17, 2009, 06:24:10 PM »
Thank you everyone,  for your response . It is nice to know you can ask some very simple questions and get intelligent answers . That is what makes this club so successful .

 Thanks Again,
  Bill
Bill Balkie
1957 Biarritz
2009 CTS