1. Clear the code and see if it comes back.
2. If it returns swap the coil pack and power lead with one of the other nine cylinders before doing a blind replacement.
3. If the code changes the coil pack is the problem. If the same code returns replace the spark plug.
4. If the same code still returns make an appointment with a service tech.
Your warranty has long since expired so take the coach anywhere you feel confident with or even consider a mobile tech if any are available in your area. V10's have been around 20 years so the knowledge base beyond Ford is pretty expansive.
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2006 Hurricane 31D built on a 2006 Ford F53
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