dies after 20 25 minutes on 1991 Buick Century

we have a buick that stalls out after engine runs an will not restart have had ecm maf crank sensor coil packs and ignition module replaced an the problem still remains. any idea

by in Crocker, MO on June 25, 2013
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1 answer 2 comments
ANSWER by , June 25, 2013
Start right back up when it stalls? If not at that time check for ignition fire or spark. If GOOD HOT spark then focus on the fuel system. Need pump pressure reading!
COMMENT by , June 25, 2013
no it will not restart until it has cooled down but yet I have 40psi on fuel an shows great spark
COMMENT by , June 25, 2013
Ok-------- water in fuel. I have no idea! Good luck.