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02-13-2012, 02:48 PM
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#1 |
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Registered User
Join Date: Apr 2011
Location: Chicago IL
Posts: 46
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Moisture Exhaust
Hey guys I seem to have a lot of moisture coming out of the tail pipes. It seems excessive to me. I live in Chicago where its cold and I do not remember if this happened in the summer. I have a Inline 250 with no mods in a 1966 shortbed.
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02-13-2012, 03:05 PM
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#2 |
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Registered User
Join Date: Jan 2001
Location: Lincoln, Nebraska
Posts: 2,145
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Re: Moisture Exhaust
I bet you have ethonal blend fuel. Around here when its near zero it frosts the whole backend of vehicles.
__________________
'66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed" |
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02-13-2012, 05:00 PM
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#3 |
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Who Me?
Join Date: Sep 2010
Location: Royal Palm Beach, FL
Posts: 4,067
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Re: Moisture Exhaust
Isnt this fron condensation in the system and burns off when its hot? I see most modern cars do this too.
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 Steve1997 Tahoe LT 4D 2WD (DD) 2001 Blazer 4D 2WD 1961 Apache 10 (sold) 1965 C10 Stepper (sold) |
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02-13-2012, 05:08 PM
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#4 |
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Registered User
Join Date: Sep 2009
Location: California Delta
Posts: 2,163
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Re: Moisture Exhaust
Is this just on warm-up or is it all the time?
Judging by the marks on the bumper, I'd say there is a little oil there too.
__________________
Name: Rich Current Ride: 1964 C-10 Short Fleetside Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe Past GM Trucks: 1959 GMC short stepside 1968 GMC short stepside-4x4 1973 Chevy short stepside 1989 Chevy short fleetside-reg cab 1993 Chevy short fleetside-Xcab 2002 Chevy short fleetside-Xcab Save the dinosaurs, use synthetic oil. |
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02-13-2012, 05:17 PM
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#5 |
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Senior Enthusiast
Join Date: Feb 2007
Location: Spokane Valley, WA
Posts: 8,356
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Re: Moisture Exhaust
If it only happens during cold weather starts it’s completely normal. Moisture in the atmosphere condenses in the hot mufflers after the engine is shut off. This water supply is now sitting in the muffler waiting to be blown out the tail pipe when the engine is started.
This is why Sears and other chain stores stopped carrying/offering dual exhaust systems back in the 60’s. Single exhausts tend to burn the moisture out much faster with only one pool of water (1 muffler), and more pressure to blow the water out (dual exhausts having less back pressure). This dramatically cut down on their burned out muffler warranty issues to the point they eventually only offered singles. |
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02-13-2012, 09:47 PM
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#6 |
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Registered User
Join Date: Apr 2011
Location: Chicago IL
Posts: 46
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Re: Moisture Exhaust
Hey thanks Guys! Yea there is a little oil as the engine hasn't been rebuilt. It does it all the time and my bro was saying that he thought it was a head gasket. It is clear water though and I just wanted to get a different perspective. My brother wants me to put a BB in it and is always trying to come up with reasons why I should. He just wants to rip it apart! He had a 84 sitting for awhile but didn't get to build it 4 he had to sell it so he wants to do mine!
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02-13-2012, 10:21 PM
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#7 |
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Registered User
Join Date: Apr 2011
Location: Fayetteville WV
Posts: 71
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Re: Moisture Exhaust
If you are not losing coolant then head gasket is not the problem. I agree condensation, aggravated by ethanol.
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02-13-2012, 10:42 PM
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#8 |
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Registered User
Join Date: Oct 2011
Location: Sheridan, Arkansas
Posts: 95
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Re: Moisture Exhaust
I just got rid of my 65 Burb with a BB and got a 64 swb with a 230 because gas price are going nowhere but up. I would much rather be able to drive my little six than sit and look at the Burbs BB just sitting there because it cost to much to drive. So keep that inline lol
 As for the water mine does that until it warms up, if the head gasket was leaking you would either have oil in the water in the radiator or you would have milky looking oil. not to mention it would be smoking like a freight train ALL the time. Jut my .02
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