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 jjwebb123
A.k.a.: Jason
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 posted on March 25th, 2014 at 07:48 PM |
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Intake Manifold Condensation
I Noticed this afternoon whilst running the beetle that there were water droplets directly under the carb on the intake manifold,Like condensation.
Just wondering if others experience that, and is it normal?
Look forward to your opinions. 
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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viiking
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| posted on March 25th, 2014 at 09:40 PM |
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When you have a phase change from liquid to gas e.g. liquid petrol to vapour (or Liquid LPG to gaseous LPG) heat is released and any pipe in contact
will cool.
Cool the pipe enough and the water vapour in the atmosphere will condense. The Dew Point of water vapour (the technical term) is temperature
dependent. When the temperature of the pipe etc drops below the dew point of the water, droplets appear.
On the other hand, if your stand offs are too wide and it rains, you get the same effect. Ditto if you have driven through deep water.
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cooky monster
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| posted on March 25th, 2014 at 09:53 PM |
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Sounds like your heat risers are blocked |
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jjwebb123
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| posted on March 26th, 2014 at 10:06 AM |
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yeh well after about 10mins of running in the shed. I can touch
the heat risers and they are warm.not sure how hot they are supposed to be
too hot to touch?
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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jjwebb123
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| posted on March 26th, 2014 at 01:04 PM |
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http://bobhooversblog.blogspot.com/2006/11/vw-heat-risers-education.html
Very informative.
starting to think i have heat riser issues.
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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jjwebb123
A.k.a.: Jason
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| posted on March 26th, 2014 at 07:03 PM |
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My exhaust system doesnt have a hole in the exhaust where the heat riser pipe joins to the exhaust.( purchased new a few years back)
So no gases would be traveling through the riser pipes.
After a good drive they are really hot,too hot too touch. But that may explain why it is rough when cold,(big hessitation after starting/braking down)
becuase the heat riser pipes are just as cold
as the manifold. But once it warms the pipe does, in turn vaporising the fuel better. She runs GREAT once warm. ( 5mins or so)
That would also explain the contant fouling of plugs. Becuase the plugs are getting pretty much liquid every start.
Just my thoughts.......What are yours???????????
"A car for the people, an affordable Volkswagen, would bring great joy to the masses and the problems of building such a car must be faced with
courage."
Adolf Hitler At opening of 1934 Berlin Auto Show
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ian.mezz
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| posted on March 27th, 2014 at 07:01 PM |
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most old vw don't even have heat raisers, the water doesn't get in the motor. drive it more
try a hotter plug w10 instead of the w8
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