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A while back, I posted a thread asking y'all for help diagnosing my '86 MJ 2.5L TBI. It runs funky sometimes, works fine at other times. I could be driving along, doing fine, and then all of a sudden, it would act like it wasn't wanting to take the gas and would just bog down and die. Anyway, I still haven't diagnosed it. Thought maybe fuel pump was dying, but I dropped the tank and pulled the pump, and it has been replaced. There wasn't a ton of sediment in the bottom of the tank, but the old sock and some kind of rubber grommet was sloshing around in the bottom, leading me to believe the pump is not the one the the Jeep left the factory with. Anyway, the problem is the vacuum lines on the top of the tank. They weren't securely seated, and I'm not sure how important those line are to making the engine run right. Anyone here know? Are these grommets still available at some parts store so I can replace them? Also, a side note, I found out that I have a 27.5 gallon tank. Edit: That "27.5" is not in reference to capacity... Once I cleaned the outside of the tank with Purple Power, I was able to read the stamped plate that states it's a 16 gal tank. I should have known that 27.5 was a little much lol.