Re: Eurovan Gasoline Fumes when Hot & High - Recap
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Replacement of the N80 purge valve on 1997 EVC 8/24/24
Tested the old N80 valve. Applied 12 volts DC, it clicked. I could, by blowing on the input side, get some air to pass, but very little and I had to blow very hard.
I replaced the original Bosch 0-280-142-308 valve with an aftermarket URO P/N UR-077133517C. Tested the new N80 valve and could easily blow air through it with 12 volts applied.
The N80 is attached to the same support used to support the radiator reservoir, with the use of an additional bracket, a bolt, and a clever rubber fitting that holds and surrounds the valve.
Replaced the hose from the Intake manifold to the N80 with some Fuel line/PCV/EEC hose 5/16”, part# NBH H176, from NAPA and added hose clamps.
Reused the short piece of hose from the input side of the N80 valve. This hose is 3”- 4” long and formed into an “L” shape. It looks to have a part number on it of “VW DE COO 701 201 801 C32 96” This hose runs horizontally towards the driver’s side and then drops down once past the radiator reservoir support. VW even put a slight notch in the support and added a piece of rubber to prevent it from cutting into the hose as it turns downward after passing the radiator reservoir support.
Attached a NAPA fuel filter part # FIL 3002, using some of the new hose from NAPA and some more hose clamps. The filter “nests” vertically behind the radiator reservoir, and pressed up against the vacuum boost for the breaks. It sits about an inch forward of where the original hose came up to meet the N80 valve, so the rubber on the notch was removed and saved for posterity.
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If anyone sees something that looks problematic drop me a line. In the meantime, I will monitor the filter and see if the new, functional N80 valve helps with the fuel vapor issue.
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