Why do I have........???

[lak2004]

Why do I have more than one fuel line running into my tank?? I thought carbd vehicles only had one line? Here are a few pics I snapped today:

Or am I wrong in assuming I only have one line? Sorry for the sideways shot of the fuel pump. Vehicle info is in sig line. Thanks!

 

[Pvt. Maggot]

There is also a vent, and vapor line.

 

[lak2004]

Ok, so if I went FI, I would still have to run a return line also?

 

[Big91RustyBucket]

Ok, so if I went FI, I would still have to run a return line also?

Yes and there are 2 line's on the Throttle body as well .

 

[dyeager535]

You have the vent, fuel out, and fuel return. That's why your pump has three fittings. Something they did later on to help prevent vapor lock.

You've already got the return line, I suspect the carbed return is fine for FI, since it's no/very low pressure. Volume probably isn't an issue for the return either.