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C63 fuel leak top of sending unit filter

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C63 fuel leak top of sending unit filter

 
Old 07-11-2019, 06:08 PM
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C63 fuel leak top of sending unit filter

Hi guys, Iím new to the forum and recently purchased a c63. I am at a loss with an issue and i was hoping you guys can help me figure it out. Iíve attached a pic of where my fuel is leaking from. Noticed fuel smell at rear driver wheel well each time i go for a drive and after opening up the rear seats and cover to the pump i noticed fuel slowly coming from this opening. I circled the opening in red. Any ideas?? Thank you all in advance!!!
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Old 07-11-2019, 07:03 PM
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You need to replace that unit. Happened to me recently.
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Old 07-11-2019, 07:57 PM
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Originally Posted by m a x i m u s View Post
You need to replace that unit. Happened to me recently.
Why does it leak from there though? Is it some sort of over flow or vent? What purpose does it serve? Thanks!
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Old 07-11-2019, 08:43 PM
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Originally Posted by Dbet7 View Post
Why does it leak from there though? Is it some sort of over flow or vent? What purpose does it serve? Thanks!
Mine was cracked from age and heat, etc. Not sure if some kind of epoxy or JB Weld would seal it up, but I don't like messing with gas leaks so I replaced the whole unit.

Actually I just took a look at your pic. I don't know what's up with that hole, but mine was cracked where the black tip from the green hose meets with the white plastic.
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Old 07-11-2019, 09:04 PM
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Originally Posted by m a x i m u s View Post
Mine was cracked from age and heat, etc. Not sure if some kind of epoxy or JB Weld would seal it up, but I don't like messing with gas leaks so I replaced the whole unit.

Actually I just took a look at your pic. I don't know what's up with that hole, but mine was cracked where the black tip from the green hose meets with the white plastic.
Thanks for your feedback. Yeah i have no clue wtf that opening is for. Hoping someone can tell me. I was thinking to put a rubber cap over it temporarily till i can make the time to get to the dealer. Car runs perfectly fine but no clue why itís leaking from there.
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Old 07-11-2019, 09:18 PM
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Originally Posted by Dbet7 View Post
Thanks for your feedback. Yeah i have no clue wtf that opening is for. Hoping someone can tell me. I was thinking to put a rubber cap over it temporarily till i can make the time to get to the dealer. Car runs perfectly fine but no clue why itís leaking from there.
I'm curious to know what that hole is for as well. Just be careful with the fumes. I had a lot of gas pooled in that recess where the hose plugs in. I was shopping for a new car while waiting for the part to come in, just in case, lol.
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Old 07-11-2019, 09:25 PM
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Originally Posted by m a x i m u s View Post
I'm curious to know what that hole is for as well. Just be careful with the fumes. I had a lot of gas pooled in that recess where the hose plugs in. I was shopping for a new car while waiting for the part to come in, just in case, lol.
Hahaha yeah itís not too bad but still a gas leak.
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Old 07-11-2019, 09:35 PM
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The way that hole piece is shaped, it does seem like some sort of an overflow, but I dunno.
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Old 07-11-2019, 09:37 PM
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Originally Posted by m a x i m u s View Post
The way that hole piece is shaped, it does seem like some sort of an overflow, but I dunno.
Thatís what Iím thinking. Some sort of overflow or worn filter indication.
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