FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: Mark65 on July 19, 2020, 07:17:09 AM
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Hi from the UK. I have a basic question about my Carter pump. The car has both an electric pump and a Carter mechanical. Because I almost never use the electric pump I had almost forgotten it was there. As the car had been standing unused for quite a while, this time I used the electric pump to fill the bowls. The car has a dual quad 427. I started it and quickly checked round for leaks which is just as well as a large puddle of fuel was accumulating underneath! It seems that the Carter was throwing fuel out of what I suspect is a return pipe hole (pictured in the attachment, if it's worked). The hole is 1/4". There is no return plumbing so I assume there was some kind of plug in there which was pushed out by the electric pump pressure. So my question is what has fallen out (I can't find anything after a good search round) and could I just turn up a simple plug and Loctite it in? It's a good pump otherwise, so I'd rather not replace it if possible. There is no regulator in the system and I'd prefer not to use one. The car is street only.
Thanks for any help, Mark
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Thats the hole thats tell you the diaphragm in the pump is leaking
so you dont fill the crankcase with fuel
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Ah, very useful. Looks like a new diaphragm if they're available. Good job I didn't plug it!
Many thanks,
Mark
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You also need to check for fuel in the engine oil...just in case.
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Thats the hole thats tell you the diaphragm in the pump is leaking
so you dont fill the crankcase with fuel
I use a Carter fuel pump didn't know about that hole. Thanks for the info.
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Water pumps have a similar hole, for indication of a leaking seal.
Pat
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technical name is weep hole.
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NPD sells a good rebuild kit for them.