What are my options

[SAndreasen]

I didn’t get so lucky on this truck my feed in pump tank keeps causing my external lift pump to suck air .

 

[NIsaacs]

I would pick one to use and toss the other one.

 

[AH64ID]

Agree with @NIsaacs, no need for dual pumps. Ditch one, preferably the engine mounted one.

 

[SAndreasen]

The in tank pump is dead . What can I do to bypass it . I don’t want an in tank pump Is the stupidest design anyone ever thought of. I guess unless your a dealer or shop why have a pump you can change in 15 minutes when you can have one you need to drop the fuel tank to change ? So is a draw straw a good way to bypass the pump in the tank and how do they work ?

 

[AH64ID]

The in tank pump is dead . What can I do to bypass it . I don’t want an in tank pump Is the stupidest design anyone ever thought of. I guess unless your a dealer or shop why have a pump you can change in 15 minutes when you can have one you need to drop the fuel tank to change ? So is a draw straw a good way to bypass the pump in the tank and how do they work ?

lol, if the in-tank pump was so bad why have then been used for a LOT longer than the engine mounted pump with a MUCH greater life expectancy and improved performance...

Do what you want, but spending any money on an engine mounted pump is futile. The reasons they are obsolete and a poor design are plentiful. You already have the wiring for the in-tank pump, do the smart thing and replace it.

In order to bypass the in-tank pump you'll need a new basket, if you can find one, for your tank that was designed for the engine mounted pump. I wouldn't run a draw straw, they have suction issues, even the newer ones.

 

[SAndreasen]

lol, if the in-tank pump was so bad why have then been used for a LOT longer than the engine mounted pump with a MUCH greater life expectancy and improved performance...

Do what you want, but spending any money on an engine mounted pump is futile. The reasons they are obsolete and a poor design are plentiful. You already have the wiring for the in-tank pump, do the smart thing and replace it.

In order to bypass the in-tank pump you'll need a new basket, if you can find one, for your tank that was designed for the engine mounted pump. I wouldn't run a draw straw, they have suction issues, even the newer ones.

Never had that much trouble with the engine mount pump . And that’s not the question I asked in the first place . Looks like I can get a draw straw or a fuel module without a pump in it . Not sure how a draw straw installs but it looks the cheapest. Out of 9 of these trucks I’ve owned I’ve replaced two engine mount pumps both trucks that have in tank pumps both died but oh I guess they are reliable .

 

[Kneedragger]

Never had that much trouble with the engine mount pump . And that’s not the question I asked in the first place . Looks like I can get a draw straw or a fuel module without a pump in it . Not sure how a draw straw installs but it looks the cheapest. Out of 9 of these trucks I’ve owned I’ve replaced two engine mount pumps both trucks that have in tank pumps both died but oh I guess they are reliable .

 

[Kneedragger]

Sounds like you have answered your question. Problem solved.

 

[gtwitch]

I learned very early (1958) in my mechanic jobs that you should never try and pull fuel from the tank to its usage point, the early Fords flat head v8 had the fuel pump high on the rear of the engine and always had vapor lock problems and jeep with the f head 4 cyl had a similar problem and many times that vapor lock started in slow speed trying to go up hill in 4wd answer here was to turn around and back up the hill. I'm not sayint that the in tank pump is the way to go but it works and ith is a PIA to change if it dose fail, so my solution on these early P pump engines and the VP44 is to replace the engine mpunted with a frame mmount installation back near the tank and usually at or below the fuel level in the tank so you are always pushing fuel tothe engine instead of trying to pull fuel from the tank up tp the engine filter. Seems to worke for me every time I do this type of installation
gtwithc in wyoming