Spark Plugs and Wires
Ford Crown Victoria
Ford F-150
Ford F-350

How do you change the spark plugs on a 2000 V10 F350 with the coils on the top of the plugs?

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January 11, 2006 6:06PM

I believe that the V10 is of the same design as the other Triton series Ford engines - the 4.6 and 5.4. - thus overhead cam on each cylinder. On the 5.4, each coil is mounted directly on to the top of each spark plug, and then held to the intake manifold area on top of the block with a small single bolt. You will notice that the wiring coming to the coil is likely small gauge as it is only carrying low level current to the input side of the coil. You undo the small bolt and lift each coil off the top of each plug. This then allows access to remove the actual spark plug. A couple of caution points: The fuel injection rail sits right over top of the plug/coil combinations, therefore it can be a bit tricky to wiggle the coil out from under the rail. According to Ford however, it can be done without being forced to disconnect and move the fuel rail out of the way on each side. Each model and each year will have other accessories mounted in different ways - alternators, air intake plenums, other hoses etc. Therefore, some of this may need to be removed first in order to gain access to the plug/coils on top of each cylinder. Also, be prepared for more of a fight with the rear most ones as access gets progressively more difficult - this is one of the prices we pay for the newer engineering designs (not just Ford) where the engine has been stuffed further and further back into the firewall area and thus under the front cowl. Hope this is of some help. Vic M.