Foretravel Owners' Forum

Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: prevostart on December 09, 2016, 02:39:07 pm

Title: Engine sweating
Post by: prevostart on December 09, 2016, 02:39:07 pm
Motor home is parked under a metal cover sides open half way down and under side of engine is sweating so there is wet spots under engine it has been raining for last couple of days, when it's dry out it's dry, I don't remember it doing this before I changed antifreeze's, Any thoughts? Is that normal?
Title: Re: Engine sweating
Post by: oldgrayrider on December 09, 2016, 02:46:26 pm
Is it possible the block heater is on?
Title: Re: Engine sweating
Post by: wolfe10 on December 09, 2016, 02:46:47 pm
Art,

If the temperature of the metal is below the current DEW POINT, condensation WILL occur.  So, go to weather underground or other weather site and see what your dew point is.  Compare with temperature of the metal.
Title: Re: Engine sweating
Post by: wolfe10 on December 09, 2016, 02:47:55 pm

No, the block heater would warm the block and cause LESS condensation on the outside of the engine. Said another way, this would be a good way to get rid of the condensation.
Title: Re: Engine sweating
Post by: stump on December 09, 2016, 03:04:34 pm
Maybe you have a leaky roof on your metal building cover? And it's dripping on coach dripping on ground.
Title: Re: Engine sweating
Post by: prevostart on December 09, 2016, 04:14:56 pm
80% humidity  58 degrees dew point it was 50 degrees last night and 64 degrees  now.  Does that hurt anything? Does type of  antifreeze affect that?
Title: Re: Engine sweating
Post by: Texas Guy on December 09, 2016, 04:54:42 pm
Antifreeze would not have anything to do with the condensation. As said above it is a matter of
a temp. difference causing moisture to collect on the engine and other areas where it may collect.
When there is more moisture than can stay on whatever it has accumulated on, you have a drip.
Better to have your RV with a cover over it but the only way you have to prevent the condensation
drip it to go in a climate controlled environment. We all have to deal with this situation, until it gets
colder and drier air moves in.

Carter Langford
Nac-
 
Title: Re: Engine sweating
Post by: John Haygarth on December 09, 2016, 05:41:33 pm
while on the subject of things covering engine etc, does anyone have an idea what causes this that is on the outside of our coach today. Temp is only -7c and lucky not to be as our bit Northern neighbours are as it is -37c, that is almost equal to your -40f.
At least it is dry fluffy snow. ^.^d
JohnH
Title: Re: Engine sweating
Post by: bbeane on December 09, 2016, 06:22:33 pm
Yes John it's condition known as TFN (to far north) about 65 here in Ajo 45 this morning little cool.
Title: Re: Engine sweating
Post by: stump on December 09, 2016, 06:56:48 pm
while on the subject of things covering engine etc, does anyone have an idea what causes this that is on the outside of our coach today. Temp is only -7c and lucky not to be as our bit Northern neighbours are as it is -37c, that is almost equal to your -40f.
At least it is dry fluffy snow. ^.^d
JohnH
Your Bus should be in the South South where it's Warm Warm!! I'm Going to work my Arse off and one winter if only for a couple weeks, I am going to follow you to Mexico so I can learn where to go! So in the event that if that  one day comes where I don't have to  work as much, I can at least go and play if only for a week or two!!  :)
Title: Re: Engine sweating
Post by: Jerry Steele on December 10, 2016, 08:31:32 am
When the dew point is within 2 degrees of the ambient temperature fog is possible.  Condensation will then occur.