FUel pump question

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CamaroAdam73

Royal Smart Person
Mar 20, 2009
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Hilton head island, SC / Wilmington, NC
Ok so i bought a new fuel pump because i thought it was just good practice to replace the old before i take my car on an 900 mile drive.

Problem is, the old fuel pump (stock i believe) has two lines in, one line out and the new pump has one line in, one line out, whats the deal? Should i just get a Y splitter and merge the two lines coming in?
 
The smaller "in" line is a vapor return to the fuel tank. You should return the one you bought and get the correct fuel pump. Or you could plug the vapor line. Although that might cause venting problems.
 
Thanks for the input man, Returning it is out of the question, i'm leaving for PA on Tuesday, and i ordered the part offline, What are some other alternatives for the vapor return line?

And do i honestly NEED that vapor line? Or will i be alright without it?
 
Well, im in the middle of installing the new pump and i noticed that both the small line, and the big line leading TO the fuel pump have constant fuel flowing through them, so you're sure this is just a vapor return line and capping it off is ok?
 
fuel pump

let's see if we can fiqure this out, your new pump is a pump that doesn't use a vapor line..... the fuel line from the gas tank is called a supply line .. the supply line use's a hose clamp to attach it to the pump....the pressure line should screw to the pump and the carb. the vapor line is not in use so cut it off and forget about it.....now if you have gas coming out of both rubber hoses then it's a good thing your replacing your pump ...jesse
 
I wouldn't recommend cutting off the return line or leaving it open.

Go get another pump at your local parts store and check that it matches your original before you leave, and has an inlet, outlet, and return.

A new pump is only like $20. Chalk up the fact that you can't return your incorrect one as a lesson learned, and throw it on the shelf.
Who knows, if you're anything like me, you'll end up with another G-body to use it on...
 
As already stated, it's a lot easier to spend the 14-20$ on the correct fuel pump rather than take a chance on the incorrect one. Picture yourself on the side of the road and your car is on fire because of a fuel leak or misunderstanding on what lines serve what purpose. I had a edelbrock mechanical pump that died after a week. Went and bought an OEM replace for $13 and that worked better than the aftermarket pump.
 
Well the new pump is working fine, and i Securely capped the line off, and by that i mean i capped it off at the TANK, but i didn't remove the line, because i might just pickup another OEM pump.

But im sorry to say, right now 25$ would cut into my budget hard, my budget for this trip is pretty much air tight, and the reason for this is because i was laid off from my job, and other than my car, i don't really have anything i can sell.
 
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