It is my understanding that CA vehicles have a lifetime filter mounted
downstream of the fuel pump. I would recommend installing one to catch
all that the disposable ones do not (I use both). You might want to check
the spray pattern of the injectors. With all that junk in the tank I hope
it is not to late.
Drive Safely & Good Luck
Ken Lewis     <Kernersville NC, The Heart of the Triad>
86 VW Transporter Three Door Pickup
60 Porsche T-5 Coupe
85 VW GL Vanagon<Elvis>lives again!