Fuel line size?

[brokensled]

Have a question for anyone here.
I have older tnt.
When i went to try and start it i noticed it bogged like hell..IT did run and all..but i seen alot of air bubbles in the the lines.

also noticed the fuel lines are hard as a rock!

would like to do a complete fuel line replacement..
But dont know what size or type of line i should buy
any recommendations?


thank you

ted

kinda looks like this tnt

[sledjunk]

Nice year sled the yellow line if you can get it
is quite good and flexable even in the cold..
Its more costly though..