I made bad worse. First I had intermitten problems. No fuel when restarting. Replaced gas cap,fuel filter,tank to pumps fuel lines. Seemed to work, then the classic jammed key. I disregarded nice detailed instructions from this web sight. A friend said, lets just yank the tumbler. We did and like an old chevy put in a screwdriver and she turned over. O.K. but I guess mb has a fuel cut out so now no power to pumps. Any ideas ? I know, do it right. Besides that?