Vaccuum fuel pump lines

[Chris Hammer]

Hi guys, I only have the soft yellow premium fuel line for my fuel pump vacuum line. Is this to soft of a material for this application? What is recommended?

Sled is bogging at 1/2 throttle then picks up at 3/4 but not reaching top speed.
Thanks

 

[maim]

the clear yellow line will collapse under vaccume from the engine. i use braided automotive fuel line rated for at least 14 psi for any of my pulse lines.

 

[Chris Hammer]

Hi Maim, that is what I thought.
Will switch it out tomorrow and report back tomorrow. At the time that is all the line I had in the shop!

Thanks 4 the tip!
#warrior