1992 Geo Metro

Engine Performance problem
1992 Geo Metro Front Wheel Drive Manual

My Metro will randomly stall out like it is running out of fuel. Sometimes it will do it while at highway speeds and other times it will do it sitting still idling. I have done a tune up on it and have taken the fuel line off and it seems to pump a lot of fuel. Any thoughts? If your answer cures the problem I would be glad to pay something for it.