Hi Ron,namba209 said:Manny, was the combustion chamber on #4 clean like the top of the piston? If so, you may have had the beginning of a coolant leak in that cylinder/head and you've been steam cleaning it while driving. Hopefully the rebuild has cured the problem.
I didn't pay attention to the combustion chambers when I took the head to Roger Wilson. But a coolant leak would explain why my cooling system was being pressurized and blowing my bottom radiator hose off.
But the top of the #4 piston was not clean. It was covered with oily deposits.