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Based upon your pictures, I would gamble that you have a crack on the top of the tank.
I say this because it seems to be a weak spot.
This is shown in Dwayne's thread, below. And, I just dropped a tank last week out of an '85 to clean it and there was a crack in the exact same spot. Not all the way through yet, but same spot. https://rennlist.com/forums/928-foru...re-w-pics.html
However, your leak looks to be on the side where the vent fittings go into the tank, so that may be it as well.
Let us know what your guy finds, and take pics to post!
-Jason
That does look like the exact spot that gas is coming from on mine.
Based upon your pictures, I would gamble that you have a crack on the top of the tank.
I say this because it seems to be a weak spot.
This is shown in Dwayne's thread, below. And, I just dropped a tank last week out of an '85 to clean it and there was a crack in the exact same spot. Not all the way through yet, but same spot. https://rennlist.com/forums/928-foru...re-w-pics.html
However, your leak looks to be on the side where the vent fittings go into the tank, so that may be it as well.
Let us know what your guy finds, and take pics to post!
-Jason
You were spot on Jason
Tank has a really nasty split on top corner (passenger side). I'm lucky I caught this. As you can see, there is another split starting to take shape and this could've ended with another 928 burning to the ground (or worse) as when I accelerated fuel was pouring out from top when it was full.
Sourcing a tank now, with all new lines, and new fuel pump.
The Project Binky guys (not related to Porsche, but cool stuff) make it look easy to just fab up fuel tanks out of sheet metal. Would probably be less prone to cracking...
I kid, but your point is a good one. There's lots of NLA parts now that are pretty critical.
I just found this yesterday when bleeding the brakes, and I'll be checking through the port today to see if it is anything on top is leaking. Is this the area where your crack was?
07-16-2019, 02:56 PM
