Diesel injector return lines

David H

Member

Equipment
L185
Oct 31, 2016
73
1
8
Auburn Hills, MI
I would like to replace my return lines and bought some blue poly lines.
Neighbor says not to use it as heat will damage line. Tells me to get rubber fuel lines as original. 2 lines ,, 1 between 2 cylinder injectors and one return to fuel tank. Also what size?
Any suggestions appreciated.
David
 

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
28,607
5,069
113
Sandpoint, ID
Yes poly lines will harden and crack.
Use rubber lines, and not vacuum lines, only fuel line.
I'm not real sure on your models size, 1/4" or 3/16 I think.