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| 1999 to 2003 7.3L Power Stroke Diesel 7.3L Power Stroke Diesel equipped Super Duty and Excursion. |
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#2
Thu, February 4th, 2021, 12:47 AM
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Aren't the valves supposed to be in the Cylinder Head, not the top of the piston?
My initial guess would be bad seat pressure on the springs which caused valve float. Or possible, trying to run an exhaust brake which again caused valve float. As you indicated, that block is scrap at this point! 
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