Update. Still having problems with the rebuilt 4.0. We got it to idol and run by modifying the distributor mounting bracket. We ground out one side of the bracket so the distributor could rotate a little more which solves the problem. No idea why that worked? What is wrong inside the motor? Yes the timing chain and gear have been replaced again.
Now smog CERT Is due and it's running with extremely high Nox. All sensors and cat have been replaced. What the heck is wrong with this motor?
I just want to get on the trail.
Even though it's not running right I still went head and finished the install of the front Clayton 3 link.
Thanks
Kevin