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A spark plug just came out by itself...

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  #16  
Old 07-09-2014, 02:22 PM
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1saxman 1saxman is offline
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Most likely the plug was stripped before you got it. They don't just fall out. When I said they sometimes do, I meant as the result of improper installation; too much torque, too little torque, wrong plug, etc.
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Old 07-09-2014, 02:31 PM
Creach Creach is offline
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I hear ya. I bought this truck used in 09 and haven't needed to do anything to it, so whatever has happened was begun long ago. I've put 30k miles on it.

And an update is in order: The dealer says: yup, it's stripped. The force of the plug expulsion not only shredded the COP boot, but also cracked the coil housing, too. So far, the estimated cost is roughly $185 and an overnight stay.
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Old 07-09-2014, 03:22 PM
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Final update: All done. Pickup tomorrow morning.

Service writer originally told me $100 to fix, mech had $200 on the clock - writer bumped that back to the original $100. Insert kit (he forgot to mention) $45, COP $85.

Thank you all for your helpful comments. I surely hope that the old owner or *their mech* didn't cross-thread any more sparkplugs.

Creach

Edit: I forgot to mention that when this all occurred, to me (in the driver's seat) it sounded much like a tire blowout, and then an open exhaust header. And in addition I discovered that my air conditioning quit at the same time. The service writer would tell me that this had more to do with an engine misfire fault than with an air conditioning issue. I later discovered he was correct.
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Old 07-10-2014, 09:29 AM
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Yeah, they put a HeliCoil in it. I think you did okay - they could have really ripped you a new one; like, a new cylinder head, for example.
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Old 07-10-2014, 09:59 AM
Creach Creach is offline
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1saxman, I was *very* concerned that the dealer wasn't going to be able to do it without pulling the head to re-thread it.

Creach
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  #21  
Old 07-10-2014, 10:32 AM
projectSHO89 projectSHO89 is offline
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The dealer should have installed a Lock 'n Stitch insert, not a helicoil. Don't confuse the two. It's not necessary to remove heads to install inserts on the Ford modular engines, the service can be performed in-vehicle. Several cylinders are easy, several are tough but doable.

At a dealer, $230 is a good deal for this repair.
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Old 07-10-2014, 10:32 AM
 
 
 
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