Go Go Joe

Well I have a '83 US Spec Auto that I bought back in 2007 and basically put away in storage til now. I went to start it last week and no go. It would run on starting fluid but no fuel pump action. I removed the fuel pump, did the Berryman B12 treatment and hot wired it back and forth until it unjammed and now seems like it's working good. I drained the tank which had a lot of sediment and smelly old gas coming out. In addition, the metal fuel restricter in the filler tube was very corroded and needed to be removed. In so doing, a lot of rust and metal particles inadvertently fell into the tank. I removed the fuel sending unit and taking a chance, used a wet/dry shop vac to suck up the debris and some of the remaining old gas out of the tank from the top opening. The tank looks much cleaner inside but I then noticed the screen in the strainer is totally gone. So I have a new strainer and fuel hose to put back in but the old strainer is really in there and giving me fits. I have a 17mm impact deep wall socket on the strainer with a short 1/2" extension and a 1/2" rachet. I've only applied moderate hand torque to it but I'm really afraid of spinning the metal collar loose and then be looking at a tank replacement. I've doused it several times with WD-40 with no success. I'm thinking of heating it with a heat gun and then spraying with PB Blaster. Do you think that would that work? I'm really thinking if it won't come out safely to just add a inline filter between the tank and pump and leaving the old strainer in there. Any advice from the experts would be greatly appreciated. Thanks!

Joe

jcorenman

Joe,

Here: https://rennlist.com/forums/928-foru...l#post11611542

Next post has pictures.

gazfish

This guy had the same problem and patched it

jpitman2

I spun the insert in mine, and was able to seal the leaks with liberal application of PC11 epoxy, lasted several years completely dry. After I replaced the tank, I pulled the insert, separated the strainer from it just to see if it was doable. I gave the tank and insert to another 928'er who refitted the insert and was able to reuse the tank. As above though, only tighten the strainer just enough for it not to leak!
jp 83 Euro S AT 56k

Go Go Joe

Thanks for the replies. I tried to loosen it today and unfortunately spun the insert as well. So now how do I get the whole thing out now that all it wants to do is spin in place? I was thinking of maybe trying to fit a 1 7/8" muffler clamp to the outside of the raised boss. But after watching Dewayne's video it looks like nothing short of a pipe wrench and breaker bar will get these things apart. Very short-sighted design by Porsche's engineers of this fuel strainer assembly. I guess they never thought anyone would have to replace it. Instead of a steel insert they could have sprung for a few marks more and used brass which would not corrode. Or why not just incorporate the threads into the plastic tank itself? They would of held up at least as well as a metal insert. Oh well, back to square one!

Joe

GregBBRD

It's aluminum. So is the strainer. They become one, with corrosion.

Porsche never planned on there being 10 year old fuel in the tanks.

And it is a real blessing that they still have and sell brand new tanks....35 years later.

Think about trying to fabricate a replacement tank, before complaining too much.

jpitman2

Time for the tank to come out - rear end needs to be pretty high. Then you can get a grip on the strainer end and work the assembly out. Separate the insert, and re-fit as explained above. I used PC11 to seal mine, others have used JBWeld or similar with success. Use some anti-seize when you fit a new strainer and gasket.

jp 83 Euro S T 56k

struan

I removed mine by gently heating the tank with an electric heat gun. Pulled the whole assembly out with a half turn and gripped on the pipe.
We then tried to drill out the filter, fail. So put it in the lathe and turned the center out til it basically fell out of the collar.
I realise not every one has a lathe, but you might find a local shop that would do it for you. Five minute job that way, saves a lot of time and effort, and removes the possibility of damaging the collar.
After a gentle clean the collar was put back again with a little help from the heat gun. No sealant at all.
New filter and tank back in.
Been back in service for about 12months with out any leaks.

Go Go Joe

Ok got it. Greg, yeah I guess you're right in this case planned obsolescence might be a good thing. Forcing you to drop the tank and either clean or replace it and the strainer protects the engine and extends longevity of the car. I have the tank half way out anyway. Thanks again everyone!

Joe