1992 K75 Standard fuel hose

[105643]

If this has been addressed in the tech area, then I missed it and apologize. I had replaced the fuel hose (from tank to the injector pipe) earlier this year with just ol' regular fuel line. Finished a short ride today and the bike stalled when I pulled in the driveway. Odd. The bike normally idles perfectly. Tried starting a couple of times and same thing.......stalls when I let it idle. Then I noticed the gasoline smell. Looked down and saw gas pooling underneath the bike. Looked at that hose I had replaced and it was split right up by the tank.

My question is......is that fuel hose supposed to be "special", as in reinforced?

Thanks in advance

Bill Yarian
Indianapolis

 

[52184]

Fuel hoses on fuel-injected bikes need to be SAE 30R9 rated- that is a reinforced hose that can withstand the high pressures in a FI system. Your K-bike fuel pump puts out about 100psi and the fuel regulator takes that down to around 40 at the injectors.

So yes, you need special hose but it’s often available at regular auto parts stores.
More info here: https://www.hemmings.com/stories/20...-line-hose-what-you-should-and-should-not-use

Best,
DeVern

 

[105643]

Thanks, DeVern.

Bill Yarian
Indianapolis

 

[98lee]

"Regular" fuel hose is made for old carburated engines and rarely sees pressures above 10 psi.

ALWAYS specify hoses made for fuel injection for your bikes.

ALWAYS specify SUBMERSIBLE fuel injection hoses for your in tank hoses.

 

[pglaves]

ALWAYS specify SUBMERSIBLE fuel injection hoses for your in tank hoses.

And do not be surprised when the price is about $20 a foot for the submersible stuff. It is what it is.

 

[105643]

Many thanks, guys. This is why I ask questions here. I always get the correct answer.

Experience is a cruel teacher. It gives the test first and the lesson after.

Bill Yarian
Indianapolis

 

[drneo66]

Many thanks, guys. This is why I ask questions here. I always get the correct answer.

Experience is a cruel teacher. It gives the test first and the lesson after.

Bill Yarian
Indianapolis

Outside:
https://www.beemerboneyard.com/161211800405ft.html

Inside:
https://www.beemerboneyard.com/subhosekit.html