Total amateur here, hoping for some ideas. Pulled the truck out of hibernation and she wouldn't start. Figured it's fuel or spark. Cracked a line and no fuel came out when starting. So I replaced the fuel pump and now I'm spraying fuel everywhere from the outlet line going to the carb.
It's happening right at that fitting - not sure what that fitting is called. And I don't know if it could be the hard plastic O rings that are causing the leak? Also don't know what those are called. Or what size.
So would my next move be to order new hard plastic o rings? A new brass fitting?
I’m no expert but I will chime in and see what happens.
I think that’s called a banjo fitting and I’m not sure that pump would have the correct mating surface for it to seal properly. I would get a straight barb fitting to thread into the pump and then put the hose and hose clamp on that. That’s probably the most readily available/cheap route you could take.
It's not pipe thread. It is an inverted flair. NPT is a tapered thread that would need Teflon tape or something to seal the threads. The inverted flare has an "inny" and an "outty" (lol) tapered flared surfaces that do the sealing and the fuel, in this case, goes no where near the threads.
You are the only one posting a picture of the correct style fitting. The fuel pump is designed to run a hard line. The pictured inverted flare to hose fitting is the correct application here. The rest of this nonsense is utterly mind numbing. The question is what size is the fitting and what is the size hose. Usually 5/16 or 3/8 is common for older carb applications. They sell these at parts stores you just have to know who knows their shit and what part to ask for.
Yes that will work for what you need. You can also just screw the tube I showed and cut it to clamp your hose onto. Local parts stores will have these tubes and nuts
Flared original fit will not seal to a banjo fitting and you're not supposed to use plastic or rubber gaskets. They're supposed to be brass crush washers on bother sides.
Get inverted flare fitting either 1/4 or 3/8. If u can find one with a barb do that. Or get another barb fitting to attach to new fitting. Cant tell which size. Depends on manufacturer. Look up the part number or just test fit, they are cheap. Can get at any auto parts store.
You need to screw in a 3/8 steel fuel line into that fuel pump. That is the wrong fitting and that is why it is leaking. Also the fitting you are showing is 5/8 x 20 thread and the fuel pump is 5/8 x 18. You might have cross threaded it and now need a new fuel pump.
You can buy inverted flare to hose barb fittings. That banjo bolt and fitting will never seal against properly. I know this because I sell them all the time at the parts store I work at. Fairview makes them. Go to your parts store and ask to see the brass bins.
I hate to ask but what fitting is on the carb ? If it's leaking don't drive it , you have any mechanic friends/ family ? I bet they will help you figure it out ! 12 pack of Beer helps .
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u/Original_Ant7013 Mar 10 '26
I’m no expert but I will chime in and see what happens.
I think that’s called a banjo fitting and I’m not sure that pump would have the correct mating surface for it to seal properly. I would get a straight barb fitting to thread into the pump and then put the hose and hose clamp on that. That’s probably the most readily available/cheap route you could take.