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· Member
136 Posts
Discussion Starter · #1 ·
Ref: Ascona, 1972

Is the filter/strainer at the end of the pickup tube (inside the tank) needed if adequate filtering is done outside the tank? I have three filters between the tank and carburetor ... a see-through filter just outside the tank, a filter before the electric fuel pump and a third filter before the carburetor? It's common practice to remove the "sock" from the GT fuel tanks without any negative consequences, and I was wondering if the same applied to the Ascona. The tank has been sand blasted and coated inside and out ... the filter at the end of the pickup tube was about 75% blocked (rust and a jelly-like substance, evidence of silicone sealant). Are replacement in tank filters available -- so far I haven't found any. Can the filter be cleaned and made serviceable?

Thanks ....

2 Opel GT 1973
Ascona 1972

· Registered
6,344 Posts
Ken, with that many filters, I would feel comfortable removing the sock filter in the tank and throw it away. Its' job is to prevent large particles from getting into the fuel lines. The down stream filters can filter out particles as small as .003 and smaller, depending on the filter paper. I'm glad to hear you have a filter before the electric fuel pump as well as after it. Small particles can damage the pump, especially if it is a gear type pump. HTH.

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