blackwater73 8 #1 Posted February 10, 2022 What size fuel line do I need for a 416-8 OD and ID? 1 Share this post Link to post Share on other sites
TJ5208 1,841 #2 Posted February 10, 2022 (edited) 1/4 inside diameter probably about 5 feet of hose just get a little extra just in case. Edited February 10, 2022 by TJ Salyers 3 1 Share this post Link to post Share on other sites
peter lena 9,252 #3 Posted February 10, 2022 @blackwater73 , i use a 5/16 , I/D clear fuel rated vinyl hose, also have this in my 3 horses ,https://www.amazon.com/EVIL-ENERGY-Return-Petrol-Aluminium/dp/B07ZB42CGT , have it mounted VERTICALLY , just after fuel pump discharge to carb bowl fill point , arrow FACING UP ON CHECK VALVE . I use the small dark green spring clamps , with square jaw line,mans plyers for a easy slide on fit , also use a light coating of dielectric grease on the check valve slide ends , makes hose a easier / yet snug fit . this easy add on will prevent carb drain back to pump , always holding a ready gas charge to go , instant start . if your fuel pump is bad , replace it . have many hours on this set up , it consistently quick starts , my magnum engines , pete 5 Share this post Link to post Share on other sites
peter lena 9,252 #4 Posted February 16, 2022 @blackwater73 , this set up is simple and has many hours on it , when correcting a problem , why not make the initial set up better? if your fuel pump is good , this valve will hold your carb fuel in place to instant start . when you look at valve placement just under carb, fuel line , it looks like it was made for that fit . worth a try , pete 1 1 Share this post Link to post Share on other sites
