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How much should it cost to replace the spark plugs on a 2003 Expedition 4.6L?
Wiki User
∙ 14y ago
It varies by shop, region and so on. It can be quite considerable for these Expeditions. First you have to consider that they really need double platinum spark plugs. $5 and up each...and that's if you buy them at a parts store. The back four plugs are difficult to get to and require removing some items from the engine and sometimes the firewall. Each spark plug has its own coil that has to be unbolted and removed and usually the fuel injector wires have to be disconnected to allow enough room to get the plug socket and extension in to the plugs.
A good shop is going to make sure to put plenty of dielectric grease on the connections and anti seize on the plug threads. This is essential. It's a time consuming job when compared to many other vehicles.
Wiki User
∙ 14y ago
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