2nd pair plus + flush draw

[NNH]

10NL – Practicing multi-tabling, so no reads at all.
Effective stacks are $10. I open .40 from UTG+1 with AdJd, Villain calls from CO. All fold.

Flop KxJx6d
I bet 3/4 pot, he calls.

Turn is a non board pairing diamond
I check he bets about $2 into the $2.70 pot.

What’s the best line on the turn? As played, what’s my plan.

[Neeek]

I think i would bet out the turn again here. If he is trying to float or has a marginal hand he will have to fold and you can take it down. If he has a king, you still have a lot of outs and most likely won't see a raise. If he has a monster, he will almost certainly raise the turn and you can fold or call if the odds are right. Checking the turn leaves u in a situation to still call the bet, but little to no information is gained on his hand. If you miss the flush or don't catch another pair, I think you have to give up as is.