Every morning I start up our jeep it runs very rough.I put a scanner on it being the check engine light would flash.Scanner said a major vaccum leak/#2 misfire.What has me puzzled is if you shut off motor,restart it runs just fine .Any clue of the cause ? Thank you !!

 

Week fuel pump. It may be losing pressure over night.

 

Thx,but I believe it is something else.Like this morning it sat for 2 days and fired up and run just fine.