My 78 ford f150 won't start. I'm pretty sure my mechanical fuel pump is done because when i pore a little gas down the carb it fires up till its all burned up in the engine then dies. My problem is though, I can't figure out what line is the fuel line on the carb so that I can unplug it and see if I get gas when I put it in a jar and turn the key. I've found the fuel pump on the bottom of my engine but the line doesn't seem to go just straight to the carb. Ive looked online but can't find anything showing a possibility of where it might be connected on the carb.

edit: yes I know it's ford not Chevy. But trust me it's the only ford I own. XD

 

It's going to be the big line into the carb

 

Good enough! Thanks!