MXM140 Maxxum fuel line issues

[xoSimplyJack]

Ever since I replaced the fuel pump on my MXM140 Maxxum, I've been dealing with a fuel leak from the return line that just won't stop. I've put in a new fuel line, swapped out the elbow fitting at the tank, and got a new vented fuel cap but the issue is still there. What should I do?

 

[FarmerBoy2025]

@xoSimplyJack you know, even with a new line, there could be a restriction or a blockage somewhere further down the system. It's common for gunk to build up over time.
you need to try blowing compressed air through the return line from the tank back towards the pump. It might dislodge whatever is causing the pressure to back up and force a leak

 

[ch00se life]

If it's still leaking after all that, odds are the pump's building excess return pressure, either wrong replacement spec or internal fault....stop chasing fittings, you might need to replace the pump again