broken spark plugs

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Jul 11, 2008 | 03:43 AM

ozzy460

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Joined: Jan 2004

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From: Afton NY

broken spark plugs

anyone know of a way to get plugs that are rotten off out of the heads on my 97hd 460? i just the porceline is sticking out of the hole and bout once a year while plowing it blows out, ive gotten 3 out that way but just want to do them all. thanks

Jul 20, 2008 | 05:41 PM

Hokiewheeler

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Joined: Dec 2004

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Is the hex broken off of them too? If so, you're gonna have to get an easy out in the hole and work at it. You'll need to heat them up red a few times and let em cool off. Then heat it once more and try to get it loose. If you break the easy out, start the engine up and use the torch to burn it out. The running engine blows the slag out of the hole. I know it sounds pretty savage but the only other option is pulling the head to do it the right way.

Jul 22, 2008 | 09:05 AM

werneil

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Joined: Oct 2007

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hi, if the hex is broken of and you have no porcelain left, plug the hole up with almost anything, with carefull selection of drill bit's, drill down to the seat base this should only leave the threaded section, this is [usually] easily removed with "eazyouts". cleaning as you go helps

Jul 25, 2008 | 11:07 PM

97 bonestock

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Joined: Jul 2008

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From: Hick Town Dayton, PA

I had a similar problem with my 97 hd 460. welded a bolt to it very carefully and heated it up a few times and ran it right out with a ratchet. took the better part of 3 hours to do it. good luck.

Aug 8, 2008 | 12:51 PM

SuperFord

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Joined: Apr 2002

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I had it happen with one of mine. The hex and porcelin both came out, leaving the threads in the head. I soaked it several times with blaster, then hammered an easy-out in it and backed it out with a 3/8 drive spark plug socket. The square drive fit the easy-out perfectly and I used a wrech on the hex part of the socket to turn it. Hope it helps.