Rubber fuel hose, burst...twice

[SleepinGVR4]

OK so I have a Toyota supra fuel pump and a 6" rubber fuel hose that connects the pump to the bottom of the sending unit.

I've blown a hole in it twice now. First time was about 8 months ago and the second time was yesterday. First time it burst was when I came outside from the movies and my car wouldn't start due to zero fuel pressure. And yesterday it happened right after I accelerated some what aggressively and when I came to a stop light my car stalled. I limped it to a parking lot and figured it had to be the same problem again.

Anyway I was wondering if the ethanol they add to the fuel would cause this rubber fuel hose to break down over time? But its not like I'm running e85 or anything its just 93 with the 10% ethanol they put in all the gas here in PA.

This guy at auto zone, said some local guy came in and said he has been having the same problem. I probably have some braided -6AN line I could put on there. It would probably keep the hose from bursting but I guess it could still get a hole in the rubber and leak past the stainless braid. I don't know. /ubbthreads/images/graemlins/dunno.gif

Or should I just get some line approved for ethanol?

Oh and huge thanks to Hill (1941Galant) for coming and bringing me tools to help me fix this problem again!

 

[GVR4_1057]

Were you using fuel injection line? Or just regular fuel line?

 

[SleepinGVR4]

I'm not sure, its just 5/16" Good Year fuel hose.

 

[Andy_S]

You have to use special in-tank fuel hose. Regular fuel line isn't meant to be submersed in fuel.

 

[SleepinGVR4]

I'm pretty sure that is what I have been using.

 

[iceman69510]

Quoting GVR4_1057:
Were you using fuel injection line? Or just regular fuel line?



This comment is the key though. If you are using hose intended for low pressure fuel systems and not fuel injection, it will not survive long.

 

[3rdstrikedsm]

Quoting Andy_S:
You have to use special in-tank fuel hose. Regular fuel line isn't meant to be submersed in fuel.



This^^ Check Napa as I know they sell it but it is very costly.

 

[Dan D]

The proper line should be marked SAE30R10. This is the designation for hose compatible with an in-tank submersible application.

 

[vapid]

Its SAE J30R10, technically. But I'm sure you would've found it anyway.