924Board.org

[BurpSnarts]

Hey all, so I have my 79 NA with the dog leg trans stored for winter. Its been nice out recently so I figured that I would pull it out and run it, maybe go get some gas and do a few errands etc.

Long story short I discovered that I have a gas leak under the car. It appears to be coming from the bottom-most hose that connects at the bottom of the tank. My question is what hose is that? I've searched the forum and my Haynes manual to no avail. I'm thinking its the hose to the fuel pump but just wanted to be sure before I ordered parts etc.

Thanks in advance!
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1979 Porsche 924

[Ian89C4]

Welcome....glad the weather is nice enough to get the toofah out and about.

There are two hoses that go into the bottom of the tank. The one that is coming out of the center should be an 's' shaped hose that runs from the tank internal pump and winds over to the bottom of the external pump.

http://www.autoatlanta.com/porsche-parts/hardparts.php?dir=924-76-79&section=201-15

The other line going into the tank is the return line coming all the way from the fuel distributor. If that one is the one that is leaking you will probably have to get one made or fix it using barbed fittings etc...

Good luck!

Cheers
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Ian Edgerly
North Carolina

Current:
1981 924 SCCA/ChampCar Weissach Race Car ("Serenity")
1987 924S ChampCar Endurance Car ("Der Weg")
1980 924 Euro ("Wahala")

[ideola]

While it may be the hose itself, it is also very likely that the seal for the in-tank pump has failed (part number 928.201.187.02). They get really crumbly with age, and when they fail, they will seep fuel, which will run down the hose, making it appear that the hose or internal fuel pump are leaking. While you're down there, I strongly suggest replacing that seal.

You might also consider eliminating the in-tank pump and replacing it with the 944-style in-tank strainer. This modification is addressed in a TSB.
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erstwhile owner of just about every 924 variant ever made

[BurpSnarts]

Ok, I believe it is the hose coming from the internal fuel pump, and Ideola sounds like he might be on to something. My next question is can I get the internal pump out without dropping the tank? I'd like to do the least invasive procedure I can haha.

I think I may just pull the old one out and install a strainer. Any place I can get a strainer besides the dealer? I'm sure they're available second hand but I'm not sure where to start.

As a final consideration, if i'm considering swapping to EFI, is it worth it to just do it now or is the strainer a cheap easy fix? Ideally I'm looking to get back on the road asap, the daily driver isn't doing if for me anymore :p
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1979 Porsche 924

[ideola]

Removing internal pump is easy. Worst part is draining the fuel that's already in the tank. There is a big nut (36mm if I remember correctly) on the outside, and the pump threads into the tank.

Just do a Google search on that part number, there are plenty of resellers that provide it. I can get it too, but you can usually find it for cheaper than what my wholesale cost is.
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erstwhile owner of just about every 924 variant ever made

[BurpSnarts]

Perfect thanks! If I took pictures along the way would folks be interested in a how to post?
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1979 Porsche 924

[Paul]

We always welcome "how to" posts...
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White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.