The plastic filter between the fueltank & the fuel pump was put there by a PO
who had to buy a new (expensive) pump ruined by crud in the gastank.
I've been adding an extra filter between the tank & the pump on every fuel
injected VW I've owned for years now. The only caution is that the fuel line
between the "extra" filter & the pump has to be rigid enough so the pump
doesn't suck it flat if(when) the filter gets clogged.

Erik V.

Citerat fr�n Les Shiaman <lamusicamellama@JUNO.COM>:

> Hello -
>
> I went to my FLAPS the other day and bought a Bosch fuel filter (metal
> canister) to replace old one.  Today I looked at the lines and noticed
> that from the gas tank lines toward engine ---> a plastic box(fuel
> filter, right?) ---> then fuel pump ---> then the canister fuel filter
> ----> engine.
>
> Why are there two?  BTW the van has lived in California its whole
> life.
> Is this an emissions related issue?  I guess I need to go back to
> FLAPS
> and get the square filter as well.
>
>
> Thanks,
>
> Les
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