92 chevy s10 2.5l will crank but wont start oil gage bounces around alot but its not the oil presure sensor or spark plugs

What is your question?

Im not sure if its the fuel pump or not if not what could it be?

What makes this problem better or worse?

It dis start up drive for a couple blocks then shut off now it wont even run

How long has your 1992 Chevrolet S10 had this problem?

3 months