Odor of gas vapors

Asked by Nov 23, 2017 at 10:25 AM about the Volkswagen EuroVan

Question type: Maintenance & Repair

Odor emits most strongly from under the hood, but is strong in the cab, and
at times from under the left, right, and rear of the van. I first noticed the smell
after driving for an hour in very hot sun (in Oaxaca, Mexico, 5,200 feet
elevation, arid dessert). When I drove through Central America it was not
present. Then, the smell began again in the mountains of Peru. Now, the
odor even emits after I have been parked for a long time (several weeks) and
the van is out in the very hot sun (again, at very high altitude).

Questions:
1) Could this be an altitude related problem? Is there a way to help the van
seal better?
2) Could this be related to quality of gasoline in Latin America?

Other details:
When refueling after a long drive, the attendant opens the cap, and high
pressure vapors comes out. Also when refueling, the pump stops
prematurely (as if the tank is full), and the attendant has to commence again.
The van is operating at a higher mean temperature than normal.

4 Answers

299,845

Sounds like the fuel tank venting system called the EVAP is clogged. Have it checked out.

1 people found this helpful.
Best Answer Mark helpful

Thank you very much. I'll have it checked out.

12,675

use your nose to find the place that smells the strongest then take a look there. VW uses charcoal canisters in all thier cars for emissions control and some times the lines rot out and break coming directly from the characoal can. Often the lines are found going from the tank to the the front along the drivers side. also check for signs of fuel lines leaking as thats often the second culprit and tom is on the right track.

Thank you very much for your response. I'll take a look.

Your Answer:

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