Fuel/Hesitation

[FlagCraig]

Right after I have put gas (93 Octane) in the last few times she will do some heavy hesitating during the ride just for a few seconds. Other times when I drive she is fine.

Should I consider putting in some Octane additive when putting in fuel?

Or could this be some other fuel/carb issue?

Thanks.
1967 GTX

 

[GetX'd]

It's probably not the fuel. Did you check your fuel filter? If you try an additive I've recommended Fast-Gas to raise the octane level. You can buy it from Summit Racing.

 

[PurpleBeeper]

Do you have a vapor return line (no?) or a tank vent that's plugged up? If it ONLY happens right after you fill the tank up, that's a clue. Just a thought.... Fuel filter is a good/cheap thing to check to as GetX'd said.