Reraising with top pair weak kicker…

[Cooker]

I agree with the other poster that there is not nearly enough information in the post to speculate whether or not to raise here. On the flop you gave, he could be on a straight draw with T9, so a raise might be in order, but the number of opponents, the size of the pot, the preflop action, and the play of the bettor on past hands can all drastically change the correct action.