Replacing vac fuel valve with manual valve By looker (Read 1,072 times)

[looker]

Hey guys,
thinking about changing out the vacuum fuel valve for a manual one, but my vac valve has an extra connection above the inlet that has a vent line going back to the top of the tank.



Any ideas on what I can do with that line? obviously it can't be plugged and there's not much room to have it higher up. Would some sort of one way valve work so the tank can suck air in as the fuel level drops, but won't let fumes out?

Cheers,
Mike.

And a very merry Christmas to you all

[Alleyoop]

Just put on a Fuel Filter on the end of it. Some scoots already come with a filter on the end of the tank vent tube. and just tie it up faceing up.
Alleyoop

[Bashan]

I've got to admit I came back and read this post three times because it just wasn't quite plugging in. A brain fart eh Alley ? Your vent line opens with the vacuum only when the engine's running so no fumes escape while it's sitting in the garage....EUREKA! Alley is correct, gas fumes are heavier than air so they sink. As long as the vent hose is a little higher than the tank you're good. I did find these online:

They look like they're made specifically for vents but they don't give any dimensions as far as line sizes. I guess you could e-mail them if you're interested, just click on the image, but I think the mini gas filter on the end of the vent line works OK. Rich

[looker]

Thanks guys

Rich,
I found a small fuel tank vent with a 1/4" fitting, and a 1/4" - 1/8" reducing connector, so I should be good to go once they and the Briggs tap turn up.

Mike.

[looker]

All sorted now, bit of a long way round getting the tank vent done, but that's just me



new B & S valve in place of the vac one,



did put it before the filter purely because of the size of the connections.
Could always smell gas before this was done, can't now