Flat Spot on Throttle- Suggestions?

[ZakkForrest]

Hey everyone, so for a while on my VS Ute when it gets below 1/4 of a tank it has a major flat spot (when I stab the throttle to get up a hill it chokes and splutters and nearly stalls before picking up power again), any suggestions on what it might be or if anyone has had this problem how they fixed it? I've been told it may be anything from coil packs all the way to fuel pump lines. Any suggestions would be great, cheers!

 

[ZakkForrest]

It's a Manual by the way if that helps at all!

 

[stockies]

When was the fuel filter last done?

 

[jgtoranalc]

Do you lose power when turning RH turns?
If so then likely the return hose line in fuel tank has come loose. But I'm not sure on the setup the Utes have with their fuel tanks

 

[EYY]

Start with the fuel filter. If it's not good after that I would suggest the fuel pump, and them possibly a damaged swirl pot/return line problem as suggested (stops the pump sucking air by providing fuel during hard cornering/acceleration etc.)