Review on 🔧 Pair of VCT Solenoids 8L3Z-6M280-B 8L3Z-6M280-A for 2004-2007 F150 Mustang Sport Trac 3V 4.6L 5.4L, Lincoln Navigator, Mercury Mountaineer - Camshaft Variable Valve Timing Solenoid Replacement by Gary Hall

Although that's enough for my truck, the screws are easy to loosen. I watched a video of preventing drill bits from falling when replacing and took every precaution. With the 2nd valve, however, I accidentally unscrewed the screw and BAM! Below he went into the bottomless hole of the valve cover. For hours I tried to remove the tools, tried to remove the valve cover but to no avail. Now the truck is completely inoperable. This is NOT an easy quick fix. This is a narrow, very dark spot in the engine in a small hole. Be extremely careful or just ask a trusted mechanic to do it. That is why there are many videos on YouTube about fallen bolts. They must be made in such a way that the screw cannot be loosened.