99 rodeo with light knock after warm up

[cuda1979]

Hi I have a 99 rodeo with a light knock after warm up it sounds like it is coming from the bottom end it is loundest when you are under the engine or standing on the side by the front wheels when you give it gas you don't hear it that much. I have checked the timing belt tenioner and it does not seem to be making the noise. I have removed the engine and checked the rod bearings just looked at have not check the clearace yet. I did feel some side to side movement where rods connect to the crank do not know how much is ok. I am thinking about replacing the rod and main bearing but do not want to have to pull the engine again. Any thoughts on what I should do thanks

[amigo-2k]

did you check the S-belt tensor?

[cuda1979]

Hi yes I did check the serp belt tenioner but it did not seem to be making any noise. any other thoughts?

update I have found the problem the cylinders are worn and out of round I had to have it bored out 20 over and buy new pistons and the noise is gone hope this helps some one