Problem Reports » TSB For Possible Ejection of Spark Plug From Cylinder Head

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Ford Expedition

 

Report: TSB For Possible Ejection of Spark Plug From Cylinder Head

Ford Expedition Problem
14 Reports
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Model Years Affected: 1997, 1998, 1999, 2002, 2003, 2004

Engines Affected: 4.6L V8, 5.4L V8

Average Mileage: 119,685 mi (11,800 mi - 160,000 mi)

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There is a technical service bulletin for the V8 engines regarding a possible problem with the spark plug being ejected from the cylinder head, damaging the threads in the spark plug hole. If the vehicle is under warranty, cylinder head replacement is recommended. If the vehicle is out of warranty, Ford authorized the use of a specific thread insert to repair the head.

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  • Visitor, 2002 Ford Expedition, 5.4L V8, 11,800 mi

    Number 5 blew while on vacation - setting in the lounge of a Ford dealership waiting for the verdict. This sucks! Ford should reapir this obvious factory defect free of charge.

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  • Visitor, 1998 Ford Expedition, 5.4L V8

    bulleted two plugs due to too shallow threading in block
    helicoiled both-1000$ a plug

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  • Visitor, 2002 Ford Expedition, 5.4L V8, 120,000 mi

    Heard a loud pop, and immediately started missing. Put in insert, new plug, coil, and boot. Hope it makes it another 120,000.

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  • Visitor, 1998 Ford Expedition, 5.4L V8, 140,000 mi

    2nd time a plug has blown out

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  • toricat, 1999 Ford Expedition, 5.4L V8, 158,000 mi
     Rookie

    I had a sparkplug blow out of number 3, and had a helix coil installed, then it blew out the helix coil. now, i have to replace the head. needless to say, i dont have th emoney and its parked until i get the money. this should have been recalled a longtime ago.

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  • Visitor, 1997 Ford Expedition, 4.6L V8, 160,000 mi

    spark plug blew and stripped the head on the passenger side....replacing with a used head

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  • Visitor, 1999 Ford Expedition, 150,000 mi

    it has done it 2 times on 2 different plugs

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  • Visitor, 1998 Ford Expedition, 4.6L V8

    spark plug blew out sounds like someone has done this repair to have it happin again 6 months latter

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  • Visitor, 2003 Ford Expedition, 5.4L V8, 98,000 mi

    cylinder head blown left side cylinder #7 had repaired when happened first time 6 months ago, now same has happened again to same cylinder-spark plug ejected

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