TexasKnucklehead
Jedi Knight
Offline
Recently I had to remove my fuel pump, and re-opened the can of worms issue with weeping fuel at the pump “olive” feed line to carbs (at the pump). I spent significant time re-reading posts pertaining to fixes and wishful thinking fixes. I previously unsuccessfully attempted the “double half compression” fix. Rubber washers, O-rings and gaskets also proved futile. As noted, the engine doesn’t need to be running for this leak because 1) the fuel level in the tank is higher, and 2) the carbs are higher and the fuel in the line can leak down.
The line from the tank is 5/16” and the line to the carbs is ¼”. But the odd thing is the same threaded fitting will fit into either (input or output) fitting of the fuel pump. I replaced the line to the carbs with a 5/16” steel line and used a standard 5/16” compression fitting and no longer have that dribble of gas. Of course, that meant bending the larger line to fit (and more reading posts to find the correct routing).
In my picture you might observe several things. The three left threaded fittings will thread into either input or output of the pump (5/16). The right two have 1/4“ lines, the left two have 5/16” lines. The center two are “original” (left) input and (right) output of the pump. The rightmost is 1/4“ new steel line. The leftmost is 5/16” new steel line.
The differences in the “olives” are obvious, but using the proper sized line with a new compression sleeve seems to work fine. I used the threaded portion that came on the new line. I’m inclined to think I have over complicated this, but know I don’t want gas leaking down the road (before I get it there).
Does this all make sense?
The line from the tank is 5/16” and the line to the carbs is ¼”. But the odd thing is the same threaded fitting will fit into either (input or output) fitting of the fuel pump. I replaced the line to the carbs with a 5/16” steel line and used a standard 5/16” compression fitting and no longer have that dribble of gas. Of course, that meant bending the larger line to fit (and more reading posts to find the correct routing).
In my picture you might observe several things. The three left threaded fittings will thread into either input or output of the pump (5/16). The right two have 1/4“ lines, the left two have 5/16” lines. The center two are “original” (left) input and (right) output of the pump. The rightmost is 1/4“ new steel line. The leftmost is 5/16” new steel line.
The differences in the “olives” are obvious, but using the proper sized line with a new compression sleeve seems to work fine. I used the threaded portion that came on the new line. I’m inclined to think I have over complicated this, but know I don’t want gas leaking down the road (before I get it there).
Does this all make sense?