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Good info Tom.
I will compare the gaps on the plugs if I buy the truck. Logic would tell me that the one that fires during the power stroke would be less worn.
BTW - My 7 liter Hemi only had 8 plugs.
Yep, I know about the tick and cracked valve spring issue. No ticking from this engine just a couple of dead holes. At this point, I'm just hoping that its due to spark plugs being well out of gap range and water in the spark plug wells.
Again, unless I can buy this truck for salvage value, I'll never know...
Meanwhile - just started looking into some cleanup and updating of the old Harley today.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.