I recently replaced the fuel lines on my lawn trimmer because the old lines were deteriorated.  I known I have the correct diameter fuel lines, but there is a leak between the line and the tank.  I store my trimmer, in the garage, in the vertical position and the fuel has been dripping onto my patio umbrella.  Any ideas on what I can do to get a good seal between the fuel line and the tank?  The old and new lines just push through a hole in the top of the tank.  Danl

 

Not sure if you can find something here-

 

https://www.thistothat.com/

Its either a faulty gas line at the lightest could be a bad seal in the tank itself.  Pretty much why I'm opting to swap to a battery powered trimmer very very soon.  Right now I'm using electric.  I have two gas trimmers myself.  How ever they are old and no longer usable.  But these yard tools DO REQUIRE service appointments just like you would take your in your vehicle.  I would highly suggest completely emptying out the gas tank and taking it in for a service.  It could be a simple fuel leak or t he problem could be far worse than a simple fuel leak.  Just my observations.

Tube may have a nick or scratch.  Try moving them in or out 1/4".  Different area on tube may make a difference.

Are there "nipples" off the tank into the lines?

If so, you could

(a) put a small clamp (gas line clamp) on the offending line(s)

{don't over tighten}

or

(b) take the lines off the nipples & put automotive silicone 

(I usually use the blue stuff) on the nipples & then reattach the lines. Let set up before putting gas back through the lines.

 

If it was my unit I would use the blue silicone. YMMV

It sounds like you know where the leak is so I think I would pull off the offending line, shorten it (slightly, like 1/4") and re attach.

The tank has two 1/8" inner dia holes with no nipples or connectors, just the holes.  The holes are reinforced.  The reinforcement is minimal and is a part of the tank.  I only had to align the new 1/8" outer dia line with the hole and push it down inside the tank far enough so that I could fish it through the filler hole to allow me to install the filter.  After the filter was installed, I pulled it back a little to allow the filter to be on the bottom of the tank.  The leak is between the line and the tank hole.   If the hole was smaller or the line Dia larger, I would have a better seal.  The fuel leak is very small, but storing the trimmer in a vertical position allows the pressure of the fuel to push the fuel through.  Perhaps I could find a larger outer dia hose but it would need to have the same inner dia to allow it to fit the ferroles at each end.  Danl

I'm sure by now you surmised that either the gas line has a smaller OD than the hole , or that the hole has somehow enlarged. 

So thinking out loud--

a) if the trimmer is a name brand, I can't tell from the pics,  then go to a service center & buy a name brand hose and try that. 

b) mic the new hose(s) & old original hose to see if there is a difference. Metric versus Imperial.

c) buy a slightly larger OD hose & either trim to fit (sandpaper) or force it into the hole.

d) use Permatex gasket maker and/or Permatex blue to coat the OD of the hose & force it into the hole then let it cure.

 

Don't sweat the ID of the hose. You can usually heat the hose with a heat gun (fire hazard) but PREFERABLY put it in boiling water to soften it & make it pliable. Insert a golf tee or ice pick or awl to enlarge the ID so it fits over the filter. It should shrink back to a smaller size & better fit. Or lube it with dish detergent and force it on.

 

Google/You Tube the brand for any known problems & solutions.

 

Ran out of gray matter. I'll end it here. Good luck with it.

 

PS: Giving it a little more thought, the tank is a firm type of molded plastic and pretty rigid so a larger OD is going to be a PITA. I'd go with sealing the hole/gas line area with Permatex.

13 hours ago, smitty10101 said:

I'm sure by now you surmised that either the gas line has a smaller OD than the hole , or that the hole has somehow enlarged. 

So thinking out loud--

a) if the trimmer is a name brand, I can't tell from the pics,  then go to a service center & buy a name brand hose and try that. 

b) mic the new hose(s) & old original hose to see if there is a difference. Metric versus Imperial.

c) buy a slightly larger OD hose & either trim to fit (sandpaper) or force it into the hole.

d) use Permatex gasket maker and/or Permatex blue to coat the OD of the hose & force it into the hole then let it cure.

 

Don't sweat the ID of the hose. You can usually heat the hose with a heat gun (fire hazard) but PREFERABLY put it in boiling water to soften it & make it pliable. Insert a golf tee or ice pick or awl to enlarge the ID so it fits over the filter. It should shrink back to a smaller size & better fit. Or lube it with dish detergent and force it on.

 

Google/You Tube the brand for any known problems & solutions.

 

Ran out of gray matter. I'll end it here. Good luck with it.

ioPS: Giving it a little more thought, the tank is a firm type of molded plastic and pretty rigid so a larger OD is going to be a PITA. I'd go with sealing the hole/gas line area with Permatex.

My trimmer is a Troy Bilt.

I'll have to give your suggests a try.  Thanks for the help.  Danl