any ideas on what to check with a 1999 Malibu 2.4l 4 cylinder with 190K miles that was running fine then would crank but not start. had it towed and they said it fired right up after taking off wrecker. I went ahead and had them install a new fuel pump since my gauge hasn't worked in forever and have never changed original pump. went to get car and it took 4 very long crank sessions to start. drove to gas station and filled up tank. after a few long cranks it started again. got it home and long cranks to start. next morning just tested it and it started right up. did not drive it that day. next day cranked for a while but would not start. no check engine light while it is running. within last two months i have changed out a coil pack and all spark plug boots and all plugs due to missing and check engine light code said misfire bank 2 i believe. since replacing coil and plugs and boots it ran great. any ideas on what to check? I plan to replace plugs again just to inspect them and its easy to do.