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DenLorsTools.com Summary: Since 2005 at DenLorsTools.com and now our most recent tool website, WiseAutoTools.com, we’ve been answering questions on Ford spark plug thread repair kits. It always amazes us that there’s always new questions. A recent inquiry was regarding a 1998 Lincoln Navigator blown spark plug. I recommended the 5553 thread repair kit for the job. The Lincoln Navigator owner would prefer to use the less expensive Calvan 38900 kit and questioned why I made the recommendation that I did. Below is a copy of our correspondence.

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Expedition body is raised for easier cylinder head removal.

Summary: If removing a cylinder head on an Expedition or Navigator, many professional technicians will do a “Body Off” procedure which makes the engine much more accessible. Although this appears to be over dramatic and an over-kill, it really doesn’t take that long to raise the body once you know what to do. Flat rate technicians make their money by getting the job done in the shortest period of time. And if that means seemingly going to extremes, so be it! Find out how to avoid going through all this trouble for a failed helicoil, by clicking here.

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