Inline fuel pump placement

[farmtruc]

I'm pretty surethe '93 we just did is in that location as well.

When you say just messing with it, do you mean that you're not at the truck's potential and you're noticing fueling issues?

Do you hear the pumps whine/pitch change when you think it's not pulling fuel?
when my tank is low and i brake and stop, i hear the pump pitch get lower and i can tell it's sucking air.

[DBRODS]

Filters clean and pumps brand new....literally no miles on it yet. Just me messing with it is making all this happen. Wiring is a massive ractronix kit for the pump only. Soldered connections and pulling power straight off alt....now idk if it makes a diff but mines not that far up forward. It's about where the front leaf spring hanger is. Further up the frame would be lower overall than mine is right now by prolly 10inches.

I'd like to see the pump a little lower than that. Maybe 3-4" lower.

[DBRODS]

With my setup I had issues keeping the pump primed with the fuel line running along the frame next to the cnotch. The line is so high right there that it would create a air pocket and then the pump would loose its prime when sitting for a while. While it was running it was fine. So I ended up running the fuel line under the axle and it took care of that issue. Most of the inline pumps aren't meant to suck fuel out of the tank, they need to have a good gravity feed.

[DBRODS]

Heres what my fuel system consist of and locations. Sorry if its a little dirty, street truck. I ended up adding a inline small pump that is wired to the starter solenoid. The Belt driven pump would take 5-6 seconds cranking to start at times due to cranking RPM speed. I would only build 10psi and wasn't enough to fire the motor. So I have the small inline pump that only comes on when the key is in the start position and it fires right up.

[ecld_07]

No not at potential at all lol. I think the notch is a lot of my problem to. The line goes up actually higher than the cell at that point. I think that could be the issues with my long feed line. May swap sides of the truck since the sumps on the other side to shorten lines and run mine like yours John. Creative. Ill try and build a plate and lower the pump down too... Or scoot it forward on the frame? But that would be a long line from pump to cell...but would be downhill

[DBRODS]

No not at potential at all lol. I think the notch is a lot of my problem to. The line goes up actually higher than the cell at that point. I think that could be the issues with my long feed line. May swap sides of the truck since the sumps on the other side to shorten lines and run mine like yours John. Creative. Ill try and build a plate and lower the pump down too... Or scoot it forward on the frame? But that would be a long line from pump to cell...but would be downhill

The notch is probably the issue with the line up high. I personally like to have electric pumps as close to the tank as possible. If you can get the high spots out pre pump with a lowered pump you will be golden.

[Frenchy]

On a completely unrelated note, god damn those assassin bars hang low.

[ecld_07]

So as a test I rerouted the the line between pump and cell. Ran it like Jon's and under the axle. The pump is 3x quieter and seems much happier. I'm gonna build a plate and lower the pump down. She's a low truck devon lol. Jon what's that belt drive setup run? Will it work on a stock crank pulley?

[DBRODS]

So as a test I rerouted the the line between pump and cell. Ran it like Jon's and under the axle. The pump is 3x quieter and seems much happier. I'm gonna build a plate and lower the pump down. She's a low truck devon lol. Jon what's that belt drive setup run? Will it work on a stock crank pulley?

Good to see that took care of the issue. The belt drive gets a little pricey. It wont work with a stock crank pulley. You have to be able to mount a mandrel.

[ecld_07]

Mount a what? How pricy?