Quote:
Originally Posted by Neil Mylar LakewoodCA
Here is an update.
My brother found and removed mouse debris in the timing cover area. He replaced the missing thrust plunger and broken spring. He removed the valve cover and the oil pan and removed built up sludge. He re-set the timing which was off. The motor runs much better and it no longer overheats.
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The thrust plunger and spring replacement was the critical factor in this repair. Absent that, no amount of fiddling with the distributor would have been effective for very long. I struggled with this same problem until I discovered the cause. I would set timing, drive for a few miles until engine runs rough and overheats, then reset timing, drive for a few miles, etc., etc.