I could smell gas so I removed the gas cap and there was a lot of pressure in the tank. so much that gas mist came out with hot vapor. what can be the problem.

Asked by Aug 07, 2012 at 12:10 PM about the 1995 Volkswagen EuroVan 3 Dr Campmobile Passenger Van

Question type: Maintenance & Repair

1995 Volkswagen eurovan with 2.5 L engine. Had been driving at highway speeds

2 Answers

4,525

Modern fuel systems are closed loops...tanks are unvented and can build up positive pressure due to high ambient heat. During highway travel several factors can contribute to the add heat. Road material (dark, heat absorbent concrete or asphalt), exhaust system heat, and the increase in temperature during the day while you drive. The release of pressure from the gas cap is a good sign the tank and its hoses are intact. Now, you have a fuel smell t to track down. Get your sniffer out and try to locate the source while the car is idling. If you can't find it, take it to a mechanic for a thorough inspection...they have better sniffing tools.

1 out of 1 people think this is helpful.
2,765

there is a valve to relive this pressure in modern fuel systems, normally it is located near the intake or the charcoal tank. it could be damaged or clogged. you need to check this valve and the hose. this valve is normally controlled by the ecu, check the codes to see if it has something related to this matter.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Volkswagen EuroVan Questions

Volkswagen EuroVan Experts

#1 Tom Demyan
Tom Demyan
Reputation 270
#2 enrik
enrik
Reputation 220
#3 niceguyfl2000
niceguyfl2000
Reputation 140
View All

Related Models For Sale

Used Volkswagen Passat
210 Great Deals out of 20,849 listings starting at $1,800
Used Mercedes-Benz Sprinter
7 Great Deals out of 1,850 listings starting at $9,980
Used Volkswagen Jetta
467 Great Deals out of 31,187 listings starting at $150
Used Chevrolet Astro
295 listings starting at $1,815
Used Toyota 4Runner
319 Great Deals out of 20,540 listings starting at $2,295