4.0 Runs ok, just ok, at start up then after warm up and on shirt drive, heat suddenly blows cold, has pushed coolant to over flow reservoir, crack open cap to relase any (alit of) trapped air, add more coolant, fine... next day same thing....
Also has a miss after warm up and drive... only while at idle or lower rpm like 2500... disappears with harder acceleration...
Compression test shows cyl at #1-125
#2-145 #3-150 #4-125 #5-145 #6-125
compression test done cold...
I dont see coolant in oil or oil in coolant...
Have done cool system flush, good thermostat and good water pump....
Does not show to be running hot
Also has a miss after warm up and drive... only while at idle or lower rpm like 2500... disappears with harder acceleration...
Compression test shows cyl at #1-125
#2-145 #3-150 #4-125 #5-145 #6-125
compression test done cold...
I dont see coolant in oil or oil in coolant...
Have done cool system flush, good thermostat and good water pump....
Does not show to be running hot