Is this a fuel filter?

Dutch74 · Oct 2, 2025

Hey I just bought a 74 Mustang II, v6 engine. It’s been bogging down and occasionally dying too. I think it’s not getting enough fuel.
I would think the fuel pump would either be okay or dead, not like this where it’s kinda okay. I have fresh fuel with BG44k added.
I went to change the fuel filter and don’t see one at all. This has an aftermarket Weber carburetor. I was going to add one to the line and found this odd non-replaceable thing on the fuel line. Like a short cigar. Is this a filter or something else? If it’s a filter could it be clogged and causing the issue? Photo attached.
Thanks guys! And I’m new to owning classic cars so any advice would be helpful!

LILCBRA · Oct 2, 2025

Welcome to !

It does kinda look like a filter..... I'd say that if it's spliced into your fuel lines that it most likely is, or it's some kind of check valve, but a filter seems more likely. A new filter isn't all that expensive, I'd say get yourself a new one and replace it and see where you end up.

Oh.... and before the hordes see your post and start badgering you - post up some pics of the car! Everyone likes to see them.

Dutch74 · Oct 2, 2025

Ok thanks! I'd have to cut off the metal for it so it seems like it wasn't meant to be replaced like a normal fuel filter, but there isn't anything else for a fuel filter...

LILCBRA · Oct 2, 2025

While it's not exacty like what you have, here's another inline filter to illustrate. They're meant to be r/r'ed, not serviced with a new element.

I'd suggest picking one up like this one so you can at least see what you may be working with.

I'd avoid the filters that you can take apart only because it's another potential point of leakage.

gkomo · Oct 3, 2025

Can you try to find a P/N stamped on that thing? Either way it looks like the lines aren't fully over the metal tubing they connect to.

welder4956 · Oct 4, 2025

Dutch74 said:
Hey I just bought a 74 Mustang II, v6 engine. It’s been bogging down and occasionally dying too. I think it’s not getting enough fuel.
I would think the fuel pump would either be okay or dead, not like this where it’s kinda okay. I have fresh fuel with BG44k added.
I went to change the fuel filter and don’t see one at all. This has an aftermarket Weber carburetor. I was going to add one to the line and found this odd non-replaceable thing on the fuel line. Like a short cigar. Is this a filter or something else? If it’s a filter could it be clogged and causing the issue? Photo attached.
Thanks guys! And I’m new to owning classic cars so any advice would be helpful!

The part in your photo is not a fuel filter, it is part of the fuel vapor return (9G271). The fuel filter originally would have been threaded into the carb, item 9155 in the photo below. It may have been left off when the Weber carb was installed or replaced with one like shown in above posts.

The replacement filter looks like this:

Dutch74 · Oct 19, 2025

welder4956 said:
The part in your photo is not a fuel filter, it is part of the fuel vapor return (9G271). The fuel filter originally would have been threaded into the carb, item 9155 in the photo below. It may have been left off when the Weber carb was installed or replaced with one like shown in above posts.

The replacement filter looks like this:

Thank you - that's it! I appreciate the help, it's defintely the fuel vapor return. I'm guessing this is a smog prevention design, but not to prevent vapor lock or it would be closer to the carb.

welder4956 · Oct 21, 2025

Dutch74 said:
Thank you - that's it! I appreciate the help, it's defintely the fuel vapor return. I'm guessing this is a smog prevention design, but not to prevent vapor lock or it would be closer to the carb.

Yes, I would leave it in place and not try to remove it. At least it is removing some of the vapor that could cause a vapor lock.

Is this a fuel filter?

Dutch74

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I wish I didn't have all of these balls in the air

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I wish I didn't have all of these balls in the air

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now i can hopefully expect to receive the shaft

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Is this a fuel filter?

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