Fuel system evaporation lines

Asked by Jan 17, 2011 at 06:09 PM about the 1985 Volkswagen Vanagon

Question type: Maintenance & Repair

could a vacuum leak cause a smog check failure?

9 Answers

i think it could be timing or converter


Yes it could cause the car to fail depending on where the leak is.


My question back at you tho is, why is a 1985 being tested for smog ? ? it should be exempt from that test due to its age and decade it was built in.

http://dmv.ca.gov/vr/smogfaq.htm also check http://forum.doityourself.com/passenger-cars-suv-service-repairs-no-trucks/165410-failed-smog-test-nox-too-high-why.html they talk about what could be the issue


Jon - several state DMVs adhere to factory specs. that is, `if the vehicle was so equipped at time of mfr/sale the emission control device[s] must be intact and if they're in place they need to work properly'. many inspectors know to look for the mfr's decal to charge full price for a failed vehicle. depends on the tech. my 84 Coupe falls into that clause but, only one day a year. the rest of the time it's a straight pipe affair. the pricey cat tends to last longer and the Vanagon will go the same way. Readers ; please be advised - I do not advocate such misrepresentation ... drive happy, y'all

Cat and tuneup , engine timing fixed my high NO issue. $193 for CAT and $358 Tuneup but atleast my car runs like new now :)


good to know you're back to running well. my condolences for the wallet injury. such is the price to maintain our vehicles : VW = the Very Worst parts and labor costs. for future reference check out Parts Geek, the Bus Depot and the Samba. best regards ...


I admit the laws are different from east to west coast and while I live in Canada I figured this would be the same even for the U S all -vehicles with a manufactured date of 20 years or older are exempt from testing- here. That sucks you have to spend emmission money on vehicles 20+ years old. Good to know tho.


vehicles w/o an OBD plug obviously don't get plugged into the computer to DMV snitch loop. larger, already smogged, metro areas use sniffers to hit the wallet. again, depends on the inspecting tech. some of us drive up, buy a sticker and drive away almost that quick. I cannot condone that either ... drive happy, y'all

Your Answer

Add photo

Related Questions

  • Fuel system evaporation lines 4 answers

    Could a vacuum leak in this system cause failure of smog check?

    Volkswagen Vanagon


    Maintenance & Repair

  • I have a 1982 vw vanagon fuel injected engine that, will not start after it warms up 1 answer

    This van set for years we have changed most parts , runs great till it warms up and if you shut it down it will not start , leave it till the next day and it will start up first try , changed air co...

    1982 Volkswagen Vanagon Camper Passenger Van


    Maintenance & Repair

  • Two Fuel filters? 3 answers

    I am replacing the fuel filter on a 1986 VW Vanagon GL and I notice that there is a white plastic box in the fuel line before the main fuel filter. I have been told that some Vanagons have two fuel ...

    1986 Volkswagen Vanagon GL Passenger Van


    Maintenance & Repair

  • How to Thaw a Cold Weather Frozen 87' VW Vanagon Engine 3 answers

    Recently I traveled from California's central coast to Oregon and ran into a massive winter storm. My Vanagon is now stranded with frozen water boxes, lines, and hoses. What's my first step in ma...

    1987 Volkswagen Vanagon GL Passenger Van


    Maintenance & Repair

  • Fuel line 1 answer

    Need to replace fuel lines

    1999 Volkswagen Beetle 2 Dr GLS Hatchback


    Maintenance & Repair


Looking for a Used Vanagon in your area?

CarGurus has 31 nationwide Vanagon listings and the tools to find you a great deal.


Search Volkswagen Vanagon Questions

Volkswagen Vanagon Experts

#1 Scott Sr.
Scott Sr.
Reputation 840
#2 Ryan Redenbaugh
Ryan Redenbaugh
Reputation 250
#3 chassy
Reputation 200
View All

Related Models For Sale

Used Ford F-150
2,387 Great Deals out of 209,711 listings starting at $895