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nissan720

condensation at carb base

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What causes condensation at base of the carb.I noticed it when i let the engine get warm for about ten minutes.I have a weber 32/36 progressive carb on it.I also have a custom plate made to swith it from fuel injection.It has a ka24e engine.Could this be a vacuum leak? I sprayed carb spray at the base of the carb and the engine sound nor RPMs changed.??

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This is completely normal and in the winter can form frost. Gasoline won't burn until it evaporates and mixes with the air. This is an endothermic reaction and absorbs heat energy in order to evaporate. Like putting alcohol on your skin and blowing on it and feeling it cool. Intake manifold air will be cooler than the air outside, the manifold or base of the carburetor will also be cooler and like a cold beer glass, moisture in the air will collect in droplets on it.

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thank you datzenmike for the explanation. Another question. My car idles good around 700 rpm.When i go to accelerate it accelerates really good.When i try to get to cruising speed,its  It cuts back.Like it don't want to take the gas?

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Change the fuel filter. It's cheap and easy and if it doesn't help you won't have to change it again for 3 years.

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Changed the fuel filter. No change in the way of performance. Still chasing this gremlin!

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19 hours ago, nissan720 said:

 When i try to get to cruising speed,its  It cuts back.Like it don't want to take the gas?

 

OK. when you accelerate up to cruising speed is the pedal right to the floor? or just enough to get there???

 

 

 

 

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Okay it accelerates through the gears fine. When I get to cruising speed around 60 it starts to miss. I have to push the pedal almost to the floor to keep it going 

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2 hours ago, datzenmike said:

 

OK. when you accelerate up to cruising speed is the pedal right to the floor? or just enough to get there???

 

 

 

 When going through the gears do you put the gas pedal to the floor or not.

 

Or are you not in a hurry and just driving up to 60?

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No not putting gas pedal to the floor while going through the gears. Just only once I get to cruising speed I put the pedal to the floor to keep the truck from cutting off 

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Secondary jet partly plugged

 

Try full throttle in 2nd and 3rd to confirm.... what happens?

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