fuel in the overflow line on a 454 Crusader with a 4 barrel quadrajet

Need some help - had an excess fuel smell coming from the exhaust and on memory from my last experience of this type I pulled the overflow line on the carb and found fuel in it. Last time this happened it was the fuel pump bad in the other engine which was a brutal job replacing. Before I entertain pulling the fuel pump off - first is there a way of testing the fuel pump without pulling it off the engine or is there something else that may be creating the problem? Note : I recently rebuilt the carb on the engine I am having the overflow issue on.

Thanks for the helpm in advance

As a start...........

I would remove the line from the carb, put the end in a clear container and with blowers on and lots of ventilation, run the engine and see if fuel goes in the line..if it does....looks like a blown fuel pump.

My worst fears starboard engines fuel pump I took the overflow line off while the engine was running and the fuel was coming back towards the carb from the fuel pump - I guess its a blown fuel pump diaphram. I was hoping it was soemthing else but away we go back upside down in the engine compartment again

A small trick on the fuel pump reinstalls; use allen head SS capscrews.

Great suggestion i remember how difficult it was to get a standard hex headed bolt on when I tried to install the last one.

Thanks for all your input

Yes, diaphram is gone so you'll have to replace the pump.

12-point bolts are another option for the new pump.

finally, replace the "sight tube" if it is cloudy or starting to harden (it is not called the overflow tube).

thanks will do