Unstable idle Kia Frontier II 07 D4VH

Greetings ...
The truck is newly adjusted ... The problem is that I slow down 1200 rpm approx. And quite irregular ... When accelerating, even though it is minimal (1300 rpm) it stabilizes and does not fail ... but the idle is too unstable ... I hope you can help me ... cordial greetings

Hello.!!. . Casually I consider that I have the same failure on a Honda Bros 150 cc motorcycle. , not that the revolutions are stable, I Check Bujia, Wash Carburetor, check mang. Vacuum, change pipette (be cracked) but there is not stabilized well ahunque I improve a little. . . , I hope we share this fault . . Greetings

. :. ) I consider your problem, that it could also be, some hose that goes to the carburetor sucks air, or in some packaging, you can have some clogged, quartered hose, broken, or packaging that do not seal, and more air enters, the mescla gasoline air is not adequate for these reasons, I hope my appreciation can serve you. greetings,

On your motorcycle the problem can be in the carburetor ... It may have an air input by some seal, or that the bolt that regulates the air passage is out of range ... they usually regulate failing, that is ... Turn it to the side until it fails, then to the opposite side until it fails (telling the turns) and then leave it to the middle ... greetings ...

The other ... my truck wears a Turbo Diesel engine ... I appreciate the help ... greetings