rustyescott
Full Access Member
as the title says, can this be removed .it looks like another air leak site. and if removed what was used to plug nipple on injector fitting. also can return line to ip be done away with. pics would be nice
is fuelreturn line to filter nessary or can it be removed
- Thread starter rustyescott
- Start date
Matrix37495
The Amish Wolfman
You have to have the return line out of the IP. I can't speak for the line between the filter and the #1 injector... I'm kinda curious too.
79jasper
Chickenhawk
X2 Following...
Dave 001
Full Access Member
You have fuel hose with (2) ends to it......both ends have to seal, for a total of (2) possible leaks. You remove said fuel hose and replace it with (2) rubber caps....both caps have to seal, for a total of (2) possible leaks. I'm not trying to be a SA but I don't see the advantage.
The return line from the injection pump purges the pump of air, helps keep the pump cool by constantly circulating cool fuel through it, and the cold advance solenoid drains throught this line. The return line on the filter helps purge air from the fuel system. If you think they are leaking, I recommend just replacing them.
icanfixall
Official GMM hand model
On my rig a ran for many years without the line off the fuel filter head. I reciently just installed it and found the truck starts much easier now. We need the line off the injection pump. If you try doing away with that line the truck wont run at all. The front wire on the pump is the fuel shutoff switch or FSS. Try pulling that wire when the truck is running. It will die right away. That line has a check valve right at the pump. Its black in color. Inside the pump there is a solenoid when powered up it press's a lever to open the spring loaded check valve so fuel will return to the tank. Thats also how the pump us cooled and lubriacated too.
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