What is the white tube that runs behind the wipers?

Asked by e095824 May 07, 2007 at 04:22 PM about the 1971 Volkswagen Beetle

Question type: Maintenance & Repair

There is a white plastic tube that is connected to two other tubes that run into the gas tank, what is it?

2 Answers

lightGear answered 16 years ago

Can't find anything on that. I am totally stumped. If you desperately need to find out I would check a Hayes or Chilton manual.....and please, PLEASE, let me know what it is. It will drive me nuts!

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Anonymous answered 16 years ago

I found it. Here is what it is: 1971 Volkswagen Beetle Emission Control System The working end of the Super's emission control system is this plastic "expansion chamber" located under the cowl. Fuel fumes flows up into this tube when it expands from the tank. It then condenses and flows back into the tank. As well, a line forces expelled fumes to the rear of the car and into a charcoal canister under the right rear fender. This whole thing is supposed to stop fuel vapor and fumes from escaping into the atmosphere. To be correct, we'll have to get this working again.

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