How do you adjust the rocker arms on a jeep straight 6?
You shouldn't be able to, if you are getting too much noise it may be time for new lifters, but a 4.0 will go quite a while after it starts making lifter noise.
Gotta have the correct torque specifications and tighten those nuts on the spring assemblies. Too tight,and they don't flutter right. Too loose,and they allow the rocker arms to wiggle out of whack. My apologies for not being more specific,I'm just a 'driveway mechanic'. You need to replace the locknuts for the rockers. I'm not sure if they are positive stop or not.
Rocker Arm problems, specifically with them falling off, are common with 2000 JGC's. You can get the code read, which will point to the cylinder that has the failed rocker arm and then remove the left or right rocker cover to inspect. The problem with the falling off rocker arms tends to be a slippage of the valve guides that leaves the valve to hang up and removes the stress from the rocker so it…