Gas Tank Vent hoses

[mergedown]

Does anyone know the ID for these hoses? I believe these are the source if my fuel smell as I have replaced the sending unit gasket and the vapor tube.

Appreciate the help!

_________________
1978 Convertible Fuel Injected - Blue (originally white...wait...maybe red?)

[old gh bug]

I think they are 7mm but could be wrong

[Tim Donahoe]

I used 5mm German braided hose. But they're actually 4mm.

Tim
_________________
Let's do the Time Warp again!

Richard O'Brien

[mergedown]

[Tim Donahoe]

By the way, if you use the 5mm German braided fuel hose, use clamps just to snug them a bit. Don't over tighten. The 5mm wasn't really loose, I just used clamps because I wanted to make damn sure I was doing all I could to eliminate my fuel smell.

However, I think Jbugs sells the 4 mm, if you want to go that route. But my 5mm worked well.

I think the 4 mm wouldn't require any clamps.

Tim
_________________
Let's do the Time Warp again!

Richard O'Brien

[diablosandwich]

I think it is 3.5mm inside diameter. Here is some on http://m.ebay.com/itm/3-5mm-Diesel-Fuel-Injector-R...Ciid%253A7
_________________
1966 Java Greens

[Cali_Army_Guy]

[mergedown]

[green1303]

http://www.thesamba.com/vw/forum/viewtopic.php?t=411026&highlight=fuel+evaporative

http://www.bughaus.com/fuel_line_-_N203751.htm
_________________
1973 green Super Beetle

[Cali_Army_Guy]

I think I bought 15ft when I did mine and had a little bit left over. You could always get a shoe lace and hold it up to each line for a rough guesstimate.
_________________
2015 VW Passat Wolfsburg Edition
1966 VW Beetle - Sold

[Tim Donahoe]

That "white plastic thingy" is called an expansion chamber.

Tim
_________________
Let's do the Time Warp again!

Richard O'Brien

[mergedown]

[Tim Donahoe]

Order the green German hose from Bughaus.

Look above at Green's post for the link, as I doubt that any flaps has it.

Tim
_________________
Let's do the Time Warp again!

Richard O'Brien

[mergedown]

[air-h2o-air]

for non purists and a fix that will outlive most of us....go to lawn and garden store and get there best quality fuel hose for string trimmers...very flexible and can fit the nipples tightly without clamps

[shakers73]

[Tim Donahoe]

Nope, that line on my system was fine; although I don't see an issue with using the fuel line. It's just a conduit for fumes, after all. As long as you don't kink it, you'll be fine.

By the way, I looked for a thread that showed where all the lines attached, and I couldn't find it. One poster shows all of them attached. His car was dark blue, but I can't remember his screen name. Hopefully he'll repost here.

Tim
_________________
Let's do the Time Warp again!

Richard O'Brien

[shakers73]

Thanks, Tim! I found this....

https://www.thesamba.com/vw/forum/viewtopic.php?t=667399&highlight=plastic+vent+lines
_________________
shakers73
'74 Super Beetle
'67 Beetle

Where there is no vision, the people perish.

[Tim Donahoe]

While standing in front of the car, your left will be the passenger side, your right will be the driver side (in the U.S., anyway). So I'll give directions according to this view, which is completely opposite of most left and right directions when working on a bug.

On the right side of the expansion chamber, you have two male fittings. A hose attaches to each one of these, and those hoses are routed to two small male fittings on the right backside of the fuel tank.

On the left side of the expansion chamber, you also have two male fittings. The top fitting has a small clear hose attached to it and that bends and attaches to the blue/green plastic conduit that runs under your cowl, then down around the right hinge, then down through the body of the car, and eventually going all the way back to your charcoal canister.

The bottom left male fitting is a bit trickier. A hose attaches to it and connects to a small "T". Then one branch of the T has a hose which attaches to the middle nipple of your large "T" (the T that has, on either end, a fat 15mm bent hose that runs to the left back of your tank, as well as another bent hose that attaches to a large nipple that's screwed into your filler pipe).

Going back to the small T, you have one end still free. You attach another small hose to this end and run that hose to a small nipple that is located toward the front of the left side of your tank.

This should cover your hose routing.

Tim
_________________
Let's do the Time Warp again!

Richard O'Brien

[Keithus]

Hi mergedown,

I have a 1978 cabrio carburetor fed super beetle and my vent hoses have all been mixed up with the windscreen water hoses by a mechanic that worked on the car previously. I need to start again from the beginning I think. One of the small hoses is tucked into a gap that takes it straight to the road and causes a horrible smell when I turn left. have you had this issue at all, any pictures or advice would be great!