carby leaks Reply to topic

Hey fellas, just reinstalled my autolite 4100 carby and the dam thing is leaking around the thread of the heard fuel line to carby, I have used plumbers tape, but the thing keeps leaking, the hard line is new and threads on fine, does anyone have any suggestions on how to stop the fuel leak?


Mark

IIRC the filter screws into the carb body, not a fitting... they do have a few different threads for similar filters, but I think the correct filter has a reverse flare to seal...

Cheers mate will look at that.



Mark

The problem of mine is that the where the hard line threads into the carby it is leaking, tried as mentioned before plumbers tape, but this doesn't work, any suggestions!!!!!!




Mark

The flare should seal before it gets to the thread.
If you look inside the carb, is there a flare in there? If so, does it look OK? No major scores in it?

Same with the flare on your pipe - does it look OK? If so, it should seal.
The thread does not form any part of the seal, so you shouldn't need any kind of sealant on it.

Mark, you are missing the filter that goes between the hard line & carb. See mert's pic. Also the hard line should not have a fitting up there, only a rubber hose between the filter & the hard line.

Yup.. what Kerry said (thought the picture explained it kinda well....)

As noted there are a number of different filters. Be careful as they are close and you can destroy the threads in the carb body with the wrong one if you are not careful (had a heck of a time finding the right one for a 2100 I have) IIRC a Motorcraft F-15 is correct and the current model is the FG-15.

Is there no such thing as an aftermarket line that uses a newer style filter?

The line in Marks pic definitely looks like it has a flare nut on the end.

Sure you can probably cobble together whatever you want, but why? The correct filter is readily available, so why force it with some collection of wrong parts?

The filter is not a flare nut, that's part of the problem. The filter has a large flanged face that has a gasket to seal to the annular face around the tap to seal to the face of the carb. It does not rely on a flared end to seal.



Its a $10 filter,

www.npdlink.com/store/...7-406.html

Including gasket, rubber line and clips (NPD, but probably $47 here.... ) buy a few, get 'em shipped over, done... or continue to struggle....

And as based on the black/gold it looks like you've done a nice job of keeping it looking original, so why not jsut use the right filter?

might have an unused spare filter here if you get stuck.

Ok, I thought someone mentioned a flare previously, so I thought this may have been another option that should actually work.

If there's no flare inside that carb, then it will never seal.

mert wrote

As noted there are a number of different filters. Be careful as they are close and you can destroy the threads in the carb body with the wrong one if you are not careful (had a heck of a time finding the right one for a 2100 I have) IIRC a Motorcraft F-15 is correct and the current model is the FG-15.

Mert, what is the correct filter for the 2100. I used a Motorcraft FG-14C, is that right? Thanks.

Thanks heaps guys, yeh I had a filter on my 69, should have known it needed a filter. It has no flare.
Kerry, I thought the hardline would attach right to the filter! I have attached a photo from Mustang monthly article on the autolite and they attach the hard line right to the carby. So how would I attach the hard line to the rubber fuel hose?

Moe if you have one around mate I would be happy to buy it off you!!!


Mark

Mert thanks for the pic of the filter will need to get one


Mark