Jim Hawkins
Chief Petty Officer
- Joined
- Mar 11, 2013
- Messages
- 506
I like to replace the fuel lines on my motor every few years and in doing so have a question if the lines run as they are, are correct or if it matters.
From the output side of the fuel pump there is a 3/16 line that runs aft of the motor to the port side where it goes to a T. One leg of the T goes to the carb, the other to the primer. As I reinstall each new piece of fuel line I pump fuel through the lines to whatever point I am up to in order to flush any debris out. In doing this I noticed that fuel came out the inline side of the T but not the 90 degree side. Closing off the inline side and pumping again fuel flowed freely out the 90 degree side. This I assume had to do with back pressure and not a clog, BUT it made me wonder, if the inline side of the T has less back pressure does it make a difference whether that side goes to carb or primer?
Now, I'm not looking for opinions, I'm just wondering how these lines were run from the factory on a Johnson J30ELCUB, Thanks
From the output side of the fuel pump there is a 3/16 line that runs aft of the motor to the port side where it goes to a T. One leg of the T goes to the carb, the other to the primer. As I reinstall each new piece of fuel line I pump fuel through the lines to whatever point I am up to in order to flush any debris out. In doing this I noticed that fuel came out the inline side of the T but not the 90 degree side. Closing off the inline side and pumping again fuel flowed freely out the 90 degree side. This I assume had to do with back pressure and not a clog, BUT it made me wonder, if the inline side of the T has less back pressure does it make a difference whether that side goes to carb or primer?
Now, I'm not looking for opinions, I'm just wondering how these lines were run from the factory on a Johnson J30ELCUB, Thanks
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