Tank vents and leaking carb gaskets

[hseII]

Hooskies don't have this problem. Operators too busy looking for screws that fell out. LMAO [emoji23]

&

#NoHotStarts

 

[Termitebuffet]

Tank vents aren’t designed to allow pressure to escape......you know that right?

You know the old grub screw vents worked just fine.....

Sawhawgz, ruining the internet since 2012...

 

[hseII]

Tank vents aren’t designed to allow pressure to escape......you know that right?

Leprawookie,
Weren’t some of the pre-EPA vents designed to allow pressure correcting?

 

[72thing]

Tank vents aren’t designed to allow pressure to escape......you know that right?

I do know that Jeremy, but the only thing I can figure is tank pressure was causing pressure at the carb and fuel was leaking from/through the gaskets in the carb. This was only happening when the saw was sitting unused and got even slightly warmer than ambient temp...e.g., sitting in sun, in my toolbox, or in my shop. Is there something else that could be causing this? I'm open to suggestions, it's just making a mess

 

[Termitebuffet]

Hooskies don't have this problem. Operators too busy looking for screws that fell out. LMAO [emoji23]

I really wish they would put the little serations under the screw heads like Stihl screws have

Sawhawgz, ruining the internet since 2012...

 

[Termitebuffet]

Leprawookie,
Weren’t some of the pre-EPA vents designed to allow pressure correcting?

Cuz ....yeth

Sawhawgz, ruining the internet since 2012...

 

[hseII]

You know the old grub screw vents worked just fine.....

Sawhawgz, ruining the internet since 2012...

Dems the Wons.

 

[72thing]

You know the old grub screw vents worked just fine.....

Sawhawgz, ruining the internet since 2012...

Exactly. I might be putting a bandaid on another problem (I think I have the gaskets sealing better now) but dang if I'll let it happen again. Grub screw to the rescue!

 

[hseII]

I do know that Jeremy, but the only thing I can figure is tank pressure was causing pressure at the carb and fuel was leaking from/through the gaskets in the carb. This was only happening when the saw was sitting unused and got even slightly warmer than ambient temp...e.g., sitting in sun, in my toolbox, or in my shop. Is there something else that could be causing this? I'm open to suggestions, it's just making a mess

Did you store any Huskys near it?

You know the old, “you lay down with dogs, you get flees” proverb.

 

[72thing]

Sorry guys, I overthink things a lot of the time. I came by it honestly, though. @longleaf knows my dad very well, lol.

Thanks for listening to my ramblings today

 

[Termitebuffet]

It's the EPA'S fault I'm sure , zero venting ...just like gas cans ...

Sawhawgz, ruining the internet since 2012...

 

[hseII]

Sorry guys, I overthink things a lot of the time. I came by it honestly, though. @longleaf knows my dad very well, lol.

Thanks for listening to my ramblings today

This Is Rambling Station.

The Banter Abides.

 

[hseII]

It's the EPA'S fault I'm sure , zero venting ...just like gas cans ...

Sawhawgz, ruining the internet since 2012...

Yes Cuz, That’s It.

Will & I text back & froth earlier & we came to similar conclusion.

 

[Termitebuffet]

Did you store any Huskys near it?

You know the old, “you lay down with dogs, you get flees” proverb.

My huskies leak bar oil all over ....gas ,not so much ...im.honest about it...lol

Sawhawgz, ruining the internet since 2012...

 

[72thing]

Did you store any Huskys near it?

You know the old, “you lay down with dogs, you get flees” proverb.

No hooskies at the moment. But I'm ok with them, especially ported 346s.

 

[longleaf]

Did you store any Huskys near it?

You know the old, “you lay down with dogs, you get flees” proverb.

The Husky wasn't laying around LOL. It was to busy cuttin.

 

[hseII]

Genuine Walbro and Zama Chinese carb kits. All surfaces were clean with no old gasket material. I don't believe its leaking from the H or L screws. After pressure testing the carb, I went back and tightened the s-word out of the screws and tested again with the mityvac. Much better than before.

I also made up a rather simple but effective tank vent for the 440 today that's essentially open to the atmosphere. I drilled a hole through a tapered rubber "cork" stopper and forced the stopper into the vent hole. Then used a small brass fitting to attach to a line that runs up under the top cover with a screw in the end of the line. Stihl used the same basic setup on a lot of older saws--a line with a screw in it. Except they used a "vent insert" 1120 358 8105.

Ran a tank thru it today (tank #20 since being hybridized) and it ran strong, no leaks from vent or carb. I ran saw in all positions. I fueled it up and will let it sit in the shop, where it should get plenty warm. We'll see how my redneck tank vent works.

Will,

Was there a 30-35 degree temp Swing there the last couple days?

 

[hseII]

My huskies leak bar oil all over ....gas ,not so much ...im.honest about it...lol

Sawhawgz, ruining the internet since 2012...

TROOF.

Please leave Precious on muh Stihl Self.

 

[hseII]

The Husky wasn't laying around LOL. It was to busy cuttin.

Pics of the Jumper cables you started the 346 with.

 

[huskihl]

The Husky wasn't laying around LOL. It was to busy cuttin.

Is it still good?