[25nl] Top pair facing shove on river

Villain is new to the table but probably fishy, 31/14 over 26 hands

Checking the flop is probably bad? I wanted to gain value from his crappier hands on the turn, if i bet the flop he probably folds out a lot.

Turn sizing probably bad? More like 3.75-4? I called the turn minraise because he probably does this with his Kx hands as well as sets. I'm lost on the river.

PokerStars No-Limit Hold'em, $0.25 BB (8 handed) - PokerStars Converter Tool from FlopTurnRiver.com

saw flop

UTG+1 ($26.09)
MP1 ($23.95)
MP2 ($25)
CO ($25.38)
Button ($25)
Hero (SB) ($31.82)
BB ($19.71)
UTG ($26.30)

Preflop: Hero is SB with K, A
4 folds, CO bets $0.75, 1 fold, Hero raises to $2.25, 1 fold, CO calls $1.50

Flop: ($4.75) 4, K, 3 (2 players)
Hero checks, CO checks

Turn: ($4.75) 8 (2 players)
Hero bets $3, CO raises to $6, Hero calls $3

River: ($16.75) 5 (2 players)
Hero checks, CO bets $17.13 (All-In), Hero ???

Total pot: $16.75 | Rake: $0.82

3bet to 3+ preflop, bet flop, as played I'd never fold at any point and shrug if he has a set =\

Originally Posted by Donachello

3bet to 3+ preflop, bet flop, as played I'd never fold at any point and shrug if he has a set =\

+1