compression test on three side by siide valves it came out to zero, what does this mean?

If the dry revealed 0 PSI, then there is no need to do a wet test because it is going to give the same results! This is a pretty common problem with the 4.0L engine, they are known to break valve springs and that is consistent with your symptoms!

Run a cooling system pressure test to see of you have external or internal coolant leaks. He needs to run a wet compression test in all the cylinders and compare the readings.

Thank you for telling us the year, make and model of the Explorer. Which engine do you have? No engine on the face of the earth has three valves beside each other per cylinder. Pull the valve cover to see if all the valves are opening and closing all the way.

I should hope the right bank of cylinders has more than three valves.

It likely means that the valves are not closing. Since it involves all the cylinders on that side of the V6 engine, my guess is that your overhead camshaft on that side is not operating. Removing the valve cover is your first step. If the camshaft is not broken turn the engine over to see if it turns normally. I suspect you'll find that it does not turn. The camshafts are chain, or gear-belt, driven and the cause might lie in that area. Pressures around 120 psi are about normal for the other cylinder bank.

you probable ought to have long gone with the main blatant clarification for misfires and that's spark plugs and spark plug wires. changing them clears up maximum misfire problems. i do no longer see how a cylinder with a burnt valve would have compression yet reading the compression attempt must be a assessment. What have been all the different cylinders compression. each and all the cylinders must be close and at manufacture they try for that in the past the engine is first fired. you probably can exchange the wires and plugs your self. it particularly is to no longer overdue, in case you do this artwork your self.

internal engine damage ,

it means a new motor