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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / October 2007

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Plastic Fuel Lines and Ethanol

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Steve - 21 Oct 2007 23:02 GMT
Hey all;

Thisis sort of off topic for this newsgroup but it's the only one close
enough.

I have a gas weed wacker.  Every year, I have to replace one or more fuel
lines because they are shrinking/cracking.  The local engine repair shop
says this is because of ethanol in gasoline.

Is there any different fuel line material I can use to prevent this?  I try
and drain all the fuel out of the tank after each use and this helps but
doesn't solve the problem.

Thanks in advance;
Steve
hls - 21 Oct 2007 23:42 GMT
> Hey all;
>
[quoted text clipped - 11 lines]
> Thanks in advance;
> Steve

I have had the same problems with my newish Husgvarna chain saw.  Tygon
tubing
seems to hold up well, and is not hard to access.

Hope this helps
Scott Dorsey - 22 Oct 2007 00:57 GMT
>Hey all;
>
>I have a gas weed wacker.  Every year, I have to replace one or more fuel
>lines because they are shrinking/cracking.  The local engine repair shop
>says this is because of ethanol in gasoline.

Maybe.

>Is there any different fuel line material I can use to prevent this?  I try
>and drain all the fuel out of the tank after each use and this helps but
>doesn't solve the problem.

Ask a BMW dealer for a foot or so of the BMW fuel line hose with an
external fabric braid.  They don't use it on the newer cars, but it is
nearly indestructable.  They have 3.5mm and 5mm and up sizes... probably
small enough for a weed wacker.  I use the stuff on my lawnmower and have
never had a problem with it sitting.  HOWEVER, I also store it full, with
fuel in it every year, and a good heavy dose of fuel stabilizer.
--scott
Signature

"C'est un Nagra.  C'est suisse, et tres, tres precis."

Don Stauffer in Minnesota - 22 Oct 2007 14:27 GMT
> Hey all;
>
[quoted text clipped - 11 lines]
> Thanks in advance;
> Steve

Don't know for sure about ethanol, but used to work with model
airplanes using methanol.  The neoprene tubing we first used for fuel
lines would harden and break after awhile.  Then hobby shops began
carrying silicone tubing which worked fine for alcohol- no more
brittling.  Give it a try.
 
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