Fuel Leak

[Seano350GT]

Hey guys,

Just filled up the tank then as i was walking back to the car i noticed fuel dripping..

Got home and jumped under the car again and saw it was still going.

When i filled up the tank the pump clicked as it does when it's full, but i saw i had 20L left til full tank (just did the sending unit fix so that's not the problem) so i thought i'd throw the nozzle in again just for 2 seconds then it clicked again. Could that of been why it's dripping from here? I haven't hit anything that could cause a leak.

Help..?

Edit: Video didn't upload, how do you get videos to play on here?

Edit #2: Video attached

View My Video

http://tinypic.com/player.php?v=291eqhg&s=5

Edited April 28, 2013 by Seano350GT

[PN-Mad]

My bet is that when you did your "sending unit" fix, You didn't correctly reassemble the unit. The large o ring around the top is hard to seat once removed.

Go to Nissan and buy a new one, and take it appart, and re seat the o ring.

[Seano350GT]

that's what i'm thinking Alex. I did the whole sending unit fix myself but the only bit i did not do was reconnect the main hose to the tank - my friend did it while i was over the other side of the car but i asked him to make sure it's on properly.. i haven't noticed fuel leaking in the last 2 weeks though.

Just checked it again, still dripping really slowly though. Going to pull the seat up and check everything.

[PN-Mad]

The main hose is pretty idiot proof, but the o ring has caught people out before.

It swells in contact with fuel, making it hard to seat properly. Well worth buy g a new one from Nissan. Ask for a 350z fuel tank o ring, the large one, and you'll get the right thing.

[Seano350GT]

ok so i pulled the seats forward and lifted off the cover. Seems like the main hose to the tank was not fully connected, it had about a cm of movement until i was fully connected. There was also a small pool or fuel around that area too which i cleaned up. Turned the car on and jumped under it and noticed the dripping came to almost a complete stop. Turned it off and packed up all my crap then looked again and it was still dripping a tiny bit. Will look at it in half an hour, also that O ring you speak of was not touched when i did the sending unit clean so it won't be the issue unless it's somehow gone faulty.

My mate that did it isn't the brightest tool in the shed only reason i got him to do it was because he's smaller than me and it's so f*cking uncomfortable to get into the back of our car lol..

[n15m0]

Just don't smoke anywhere near your car until you get this fixed

[Seano350GT]

yeah shit made me nervous because it's close to the exhaust lol

[Seano350GT]

ok so i just checked it again, dripping ever so slowly.. i'll look again in the morning.

[PN-Mad]

ok so i pulled the seats forward and lifted off the cover. Seems like the main hose to the tank was not fully connected, it had about a cm of movement until i was fully connected. There was also a small pool or fuel around that area too which i cleaned up. Turned the car on and jumped under it and noticed the dripping came to almost a complete stop. Turned it off and packed up all my crap then looked again and it was still dripping a tiny bit. Will look at it in half an hour, also that O ring you speak of was not touched when i did the sending unit clean so it won't be the issue unless it's somehow gone faulty.

My mate that did it isn't the brightest tool in the shed only reason i got him to do it was because he's smaller than me and it's so f*cking uncomfortable to get into the back of our car lol..

Ummm, you have been in the tank, which means you have disturbed the o ring.

The outlet hose should click on so the clip clicks. When you put the whole hanger unit back in, you need to get he o ring seated right. Just use some brake cleaner to wash the fuel off and see where it's coming out.

[The Max]

My mate that did it isn't the brightest tool in the shed only reason i got him to do it was because he's smaller than me and it's so f*cking uncomfortable to get into the back of our car lol..

I don't see what is to "lol" about here.

It seems that neither of you are the sharpest tools in the shed. No offence but messing with critical systems such as fuel and brakes without at least doing the homework beforehand is not only dangerous to yourself but to others as well.

General rule of thumb is when you've disturbed seals in such systems, NEVER REUSE THEM!

And personally, if I don't consider someone to be all that intelligent, the last thing I would do is allow that person to work on it.

So, get a new o-ring from your dealership, grab a copy of the workshop manual and do some homework. Otherwise, pay a mechanic to help you avoid catching fire.

[Seano350GT]

 

Ummm, you have been in the tank, which means you have disturbed the o ring.

The outlet hose should click on so the clip clicks. When you put the whole hanger unit back in, you need to get he o ring seated right. Just use some brake cleaner to wash the fuel off and see where it's coming out.

 

Do you happen to have a part # or something to make it easier at Nissan?

[Seano350GT]

So i got up this morning and checked the car, no fuel leaking underneath at all. Started it and got to work, checked it again and it's leaking same as it was yesterday. I will grab an O-ring from Nissan today. I am getting the boys in the workshop here to look at it today, they are qualified techs..

[Seano350GT]

Found the culprit -

Replaced the O ring and reseated it properly then and drove it round the corner, turned it off jumped out and had a look. Leak stopped! yay.

[PN-Mad]

My bet is that when you did your "sending unit" fix, You didn't correctly reassemble the unit. The large o ring around the top is hard to seat once removed.

Go to Nissan and buy a new one, and take it appart, and re seat the o ring.

This guy, yup, he knows.

[Seano350GT]

Thanks buddy, sorry in that post i was going to thank you but i didn't for some reason.. strange to think that a little seal can cause such a dangerous fuel leak..

[scotty nm35]

Yer right... Strange...

[Seano350GT]

no really.. i was writing it at work and got distracted then i just hit post.