My 87 honda civic DX randomly stalls?

Okay my step dad have me this piece of junk 87 honda civic DX and he didn't even look at car when it's messing up he told me try fuel filter since he just change girl pump so I changed fuel filter which still didn't work it stalls at random moments though like approaching a stop sign it'll just Die or mostly it stalls when I get gas like there's days it will stall and days it won't and I need to figure out what's wrong

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