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Rain/relative humidity/dew point

Geo-TH,In

Geo-TH,In

Well-known Member
We finally got a well needed rain the past few days. On the way to town this morning I had to turn the defrosters on, build up inside the truck. The temp controls were set of cold, AC time of the year.

Before I got to town the humidity on the inside was long gone, but the humidity collected on the outside of the glass, because the glass temp was below dew point. Had to turn my wipers on.

Under the right conditions, moisture gets trapped under the truck's distributor cap and shorts out the spark. This usually happens on a day like today. I guess I'm having a lucky day.
geo.
a231206.jpg
 
I have been told when a distributor shorts out to spray the inside with WD-40 and then wipe out the excess, that will fix it for awhile. WD-40= water displacer # 40.
 
nother trick for those wet distributor caps,...wash them out with diesel,...yea, I didn't believe it either till I tried it.......
 
When I used to race motocross, I found out about NOT using WD-40 on my magneto during a wet race. Dang Yamaha kept sputtering. Used the WD-40 and never had a problem. I could run a garden hose on the exposed magneto and it never missed a beat.
 
We use to always use brakeclean to dry out distributor caps. It displaces the moisture & evaporates fast so there's no need to wipe it dry. Putting any foriegn object into a cap can cause it to carbon arc or better known as carbon tracking and ruin the cap.
Carbon Tracking Pictures
 
Guys, it a BPIA to just get to the distributor cap. I replace everything. I'm not that cheap, but getting stranded is no fun. It happens about every 2 years, usually in February and always inside garage or pole barn.
 
I leave for work at 530am
No matter how warm it is; most times high 70's to 80 this time of year; I have to turn the a/c on; set the temp to full heat; and turn on the defrost vents to get the window to clear up.
Just turning the wipers on will clean the window but it will wet back up if you do not do the above.

Or humidity is close to 100% every morning even if it has not rained in days.
 
Well did I turn off the fan fast enough or did you get the rains like we did. From Friday to Monday we had around 8 inches of rain which is way to much in that short of a time. Now the heat is here and heat index for today in this area was 105 and there calling for it to be just as bad tomorrow
 
Along the line of rain and ignitions, I grew up on the Texas gulf coast and it was all somewhat marshy, flat, lowland. In putting in streets, they always put them lower than the surrounding terrain and included "storm sewers" to help in removing water.

During the spring the streets would fill with water and the engines back then, in particular flathead 6's and 8's were horrible about flooding out as the flat had had the recess in the water jacket at the plug hole and the ignition wires were bare. Add to that there weren't the fender deflectors modern cars have now which keep front tire splashings out of the engine compartment.

Between that and the distributor problem....can add coil top tracking to that, it wasn't uncommon to see half a dozen stranded cars on the way to or from school. My have times changed!
 
(quoted from post at 10:00:33 07/06/16) Distributor cap??? My car doesn't have one. Doesn't have a distributor either. Not a diesel either.
Click to expand...
omebody steal it? :twisted:
 
Yeah but I bet your crankshaft pulley has a white line on it and a sensor watching it rather than a scribe mark for a mechanics timing light.
 
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