Fuel Tank Crud? Redoing Fuel Lines, Etc. Options

[kenshapiro2002]

So, in my continuing fuel starvation saga (another thread), I'm almost ready to rebuild the webers. Rode her hard again yesterday, and she ran pretty nicely for awhile and eventually started to starve very hard at really hard throttle. Took a very good look in the tank, and the walls look pristine, but in the circular baffle area where the sock is, there were many very tiny pieces of black crud, and the sock, though very hard to see well, looked pretty dark too.

Opinions?

Also, I'm thinking that since my fuel filter was pretty clean, that the sock might be my real problem...should take care of that before making the carbs clean and possibly getting more crap in them.

If I do pull the tank and replace the sock, shouldn't I replace the fuel line back to the engine? Any threads on that? Can I just hook a new line up to the old and pull it through?

Thanks in advance,
Ken

[jmill]

Sounds like your on the right track. If the tank is shiney I wouldn't mess with it. Replace the sock and wipe out the gunk around it. I would change the fuel lines myself. It's cheap insurance. Are you going to upgrade that fuel pump? If the sock replacement doesn't fix it thats what I'd change next provided your carbs are set up correctly.

[kenshapiro2002]

I have to believe the carbs are set up correctly as it was "built" in 1989, not a new build. The car was brought out of storage by a team of Porsche techs who have been rebuilding and fixing Porsches for almost 40 years. It ran great until I filled it up a few hundred miles after leaving CT on my way back to MD. That's when the trouble started. It was either bad gas or the fresh fuel (vs. old fuel with StaBil in it) loosened up enough crap to clog the sock, or carb or fuel pump. The filter element had about 5-10% of it covered with microscopic black crud, but was (of course) 90-95% clear. I figure it;s most likely the sock or the carbs, So far, the emulsion tube with main and AC jets looks clean as does the idle jet I pulled. Since the filter was relatively clean, I'm thinking (and I'm far from an expert here), that the crud is in the sock.

Sounds like your on the right track. If the tank is shiney I wouldn't mess with it. Replace the sock and wipe out the gunk around it. I would change the fuel lines myself. It's cheap insurance. Are you going to upgrade that fuel pump? If the sock replacement doesn't fix it thats what I'd change next provided your carbs are set up correctly.