Fuel Leak at Lift Pump

[Tizzy]

All,

A week ago I had another lift pump fail on me. That one was a Carter and lasted about a year. Luckily I had already ordered a Motercraft and had it on stand by. Installed the new pump…now I have a fuel leak at the connector to the lift pump. Are the fuel connector lines from the filter to pump supposed to have o-rings in them? I have searched and came up with responses on “olives” but unfortunately I can’t find anything on how they are applied. Should I just get a new line?

 

[IDIBRONCO]

It's a compression fitting so no o rings or seals are needed. Maybe a dumb question, but did you cross thread the hut on the end of the hard line or not get it quite tight enough?

 

[mf7lakes]

I don't know about the end fitting at the lift pump end.

I know the end of the line at the filter has an olive in it. It was well aged and coming apart but still took some application of flame to get it all out of the fitting.... might put a zip-tie on the line before you loosen the fitting end up all the way so you don't have to chase it down the line....

 

[Tizzy]

Thanks guys for the help. IDIBronco, I don’t believe I cross threaded the nut. When I discovered leak I snugged it up a bit just to make sure it was tight enough, and it still leaked. I might try to unthread it and reattach it later this afternoon just to make sure it is attached correctly.

 

[Cubey]

It's a compression fitting so no o rings or seals are needed.

3/8" inverted flare actually, but yes, no seal.

The parts needed if bypassing/deleting the mechanical pump, without chopping up the original lines. (Union comes in 2pk, only 1 needed). Just showing for reference, that's what I used on the 85 E350, so that's definitely what it is.

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[IDIBRONCO]

3/8" inverted flare actually, but yes, no seal.

You're right. I misspoke.

 

[Cubey]

You're right. I misspoke.

I figured so. Just wanted the accurate info, especially if OP or someone else reading this in the future goes about trying to repair/replace the line nut.

 

[IDIBRONCO]

Just wanted the accurate info

That's the best way we can help without a digital copy of "War and Peace".