I agree with kjsabat.
The problem should be rubber tube for connecting the in tank pump to the surface. When it cracks it sucks air when turning. I had this on my Volvo 1982 240DL.
Hurshi

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1989 230E, 8v, 166.000 km, updated to 94/95 trunk & hood
2002 Daewoo Nexia 50.000 km
Sold:
1987 VW Jetta GLE 16V, Recaro seats
1982 Volvo 240 DL (lovely car!)
and few more american cars.