We installed the Walbro 255 lph a couple of weeks ago. It ran fine for 3 days, then the rubber line coming off of the pump came apart and fell off.

We put another, EFI rated, hose on and it ran for a week, and today it did it again.

Why the hell do these hoses keep coming apart?

Do i need some kind of super special titanium wrapped braided hose?

 

I think i figured it out, the internet is a wonderful thing:

Apparently the EFI rated hose we probably uses wasn;t rated to be submerged in gas.

Title: Fuel and Oil Hoses

Issuing Committee:
Fuel, Oil And Emission Hose Committee

Scope:
This SAE Standard covers fuel and oil hose, coupled and uncoupled, for use with gasoline, oil, diesel fuel, lubrication oil, or the vapor present in either the fuel system or in the crankcase of internal combustion engines in mobile, stationary, and marine applications. Sections 7 and 11 cover hose intended to meet the demands of fuel injection systems. Sections 10 and 11 cover hose intended to meet low fuel permeation requirements. Section 3 covers Coupled and Uncoupled Synthetic Rubber Tube and Cover (SAE 30R2). Section 4 covers Lightweight Braided Reinforced Lacquer, Cement, or Rubber Covered Hose (SAE 30R3). Section 5 covers Wire Inserted Synthetic Rubber Tube and Cover (SAE 30R5). Section 6 covers Low-Pressure Coupled and Uncoupled Synthetic Rubber Tube and Cover (SAE 30R6), (SAE 30R7), (SAE 30R8). Section 7 covers Fuel Injection Hose Medium-Pressure Coupled and Uncoupled Synthetic Rubber Tube and Cover (SAE 30R9). Section 8 covers In-Tank, Low-Pressure, Uncoupled Fuel Hoses (SAE 30R10). Section 9 covers Unified Method for Fuel Hose Permeation. Section 10 covers Low Permeation Fuel Fill and Vent Hose (SAE 30R11). Section 11 covers Low Permeation Fuel Feed and Return Hose (SAE 30R12).es (SAE 30R10). Section 9 covers Unified Method for Fuel Hose Permeation. Section 10 covers Low Permeation Fuel Fill and Vent Hose (SAE 30R11). Section 11 covers Low Permeation Fuel Feed and Return Hose (SAE 30R12).


SAE 30R10 rated hose is what i should have put in it.

 

bingo

 

FWIW I got it running, again. 3/8" SAE30r10 fuel line, Gates is the only one that makes it, and NAPA is the only store i could find that could get it.

 

good man, keep it running.

 

glad to hear you got it running..all i know about the hose i got, it was dayco and said it was rated for 300 lbs, it was pretty tough hose, guess ill find out if i have the same problem as you