346 tank vent leaking

[old CB]

I've got a 2005 346xp that leaks fuel thru the tank vent. I've searched threads and not found anything to help me.

I pulled the tank off the saw thinking the fuel line might be the culprit, but it's good. Put fuel in the tank it drips out the tank vent. What's it like to replace one of these? And is there a chance that it's something else causing the vent to leak? I'm looking at this thing and wondering what it is and what could fail on it.

 

[s sidewall]

One way check valve stuck with a little trash?

Steve Sidwell, Samsung On5 using Tapatalk

 

[old CB]

One way check valve stuck with a little trash?

Steve Sidwell, Samsung On5 using Tapatalk

I don't know. All I can see is the spongey-looking face on the outside of the tank. Don't know what's beyond it. Hoping someone can enlighten me.

 

[sunfish]

It's just a porous white pill like thing and I believe there is a smaller one underneath. If the cap is tight & the fuel line is good, it should not leak. If you have never replaced the fuel line, it's time. My older 346 needs a fuel line ever 3-4 years.

 

[blsnelling]

The husky tank vents are not true one-way valves. However, it should not leak excessively. As already mentioned, it just pulls right out.

 

[jr27236]

I've got a 2005 346xp that leaks fuel thru the tank vent. I've searched threads and not found anything to help me.

I pulled the tank off the saw thinking the fuel line might be the culprit, but it's good. Put fuel in the tank it drips out the tank vent. What's it like to replace one of these? And is there a chance that it's something else causing the vent to leak? I'm looking at this thing and wondering what it is and what could fail on it.

You just push out the old one from the inside and push in the new one, if memory serves me well. But I've had them leak from the insert hole that the vent is actually inserted into.

 

[jr27236]

I don't know. All I can see is the spongey-looking face on the outside of the tank. Don't know what's beyond it. Hoping someone can enlighten me.

This is a picture from someone's previous post

 

[blsnelling]

You just push out the old one from the inside...

I don't think that's possible.

 

[sunfish]

They sometimes leak a little when fueling, just put the cap on and turn it upright, no more leak, not a problem.

I still think you probably need a new fuel line.

 

[Andyshine77]

The fuel lines shrink and start to leak. An easy trick is to pull the line out a little, this usually stopped the leaking, at least temporally.

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[old CB]

It's not the fuel line. I bought this saw last year as a non-runner, put a new P&C on it, and replaced fuel line, that plastic intake (put the metal clamp thing on), both crank seals, and maybe some other stuff--I don't remember.

So yesterday evening I pulled the tank thinking I'd need to replace the fuel line (because I don't remember what all I did last year) and there was the new fuel line. I clamped off the end of the fuel line with a hemostat, put fuel in the tank, closed the fuel cap (good seal there) -- and watched fuel drip out of the vent like that's its job. No position you lay the saw will it not leak, as I recall.

Looking inside the tank, I can't see any access to the vent. (Brad knows what he's talking about.) Maybe I'd have to drill thru it, and pull it? I'm just wary of messing with something that I don't have experience with. Nothing worse than replacing a part and finding it does what the old one did.

 

[old CB]

So I ordered a tank vent. Seems likely that'll fix me.

 

[blsnelling]

Just run a drywall screw into the middle of it and pull it out. They come out pretty easy.

 

[Andyshine77]

These vents are known to leak even when new, none of the vents seal 100%. But they're cheap and easy to replace so why not.[emoji106]

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[old CB]

Just run a drywall screw into the middle of it and pull it out. They come out pretty easy.

Excellent. Thanks Brad.

Thanks to everyone who weighed in.

CB

 

[old CB]

Pulled out the old vent--Thanks, Brad--pushed in the new one, and no more leak. Been running the saw for a week or so, and no more fuel mess.

CB

 

[blsnelling]

Glad to hear it.