I have a 2000 jeep grand cherokee that will not start right away, and it backfires alot?

Mas

New member
it doesn't matter if the jeep is hot or cold, it is very hard to start and then it sometimes backfires ALOT.
we have changed the fuel sensor and the fuel injectors and the fuel coil, i have taken it to 3 mechanics including the jeep dealership and they all told me there is nothing wrong with, now i know i am a woman but i am not stupid, does anyone have any ideas, i think the fuel pump is next to change but i am trying to avoid it because of the cost.
 
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