Fuel pumps

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Mar 16, 2018 | 03:59 PM

jwitty

Thread Starter

Tuned

Joined: Dec 2017

Posts: 387

Likes: 22

Fuel pumps

I was looking through old threads about this but am still not sure if it's ok or not. I was driving my f100 and it stalled saw that I had no fuel pumping from acc. pump. It's done this a few times in the garage. And I'd have to take mech pump off and prime it by hand. My question, I have an electric pump, can I put it in the frame rail and only use it to prime the system and then let the mech do the work when running? Or would it be best to just use electric fuel pump and get a regulator? Thanks

Mar 16, 2018 | 04:10 PM

User 71024

Cargo Master

Joined: Sep 2005

Posts: 2,954

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If the pump is losing prime it probably has a leak in the inlet tube or fuel line. Fix the leak you want need to prime it.

Mar 16, 2018 | 04:10 PM

TA455HO

Lead Gopher

Joined: Aug 2012

Posts: 10,067

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From: Seattle

I've always had good results with the stock mechanical pumps right up until they wear out. Typically get about 75,000 miles on one, but it varies.

Just a side thought: Is it still the stock in-cab tank? Are you sure your fuel cap is properly vented? An un-vented cap can lead to fuel starvation issues. This is not real common, but we have run into it before.

Chad

Mar 16, 2018 | 04:13 PM

jwitty

Thread Starter

Tuned

Joined: Dec 2017

Posts: 387

Likes: 22

Quote:

Originally Posted by TA455HO

yes it's original in cab tank. I have run it before with cap off and did it before. And it is a new pump. Odd thing though is that I had just a tiny bit of gas in oil. My thought was maybe from the pump but idk.