Volvo 850 Made from 1993 to 1997, this Volvo line was available in both a wagon and a sedan, both with were graced with several trim levels.

Help! Rounded screw on spark plug cover

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  #1  
Old 02-06-2013 | 09:50 PM
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Default Help! Rounded screw on spark plug cover

Hi, there is 1 torx screw on my spark plug cover that is rounded completley. No grip for the factory screwdriver or anything to grasp and screw it out. Can anyone help me?
 
  #2  
Old 02-06-2013 | 10:48 PM
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Drill it out. That's probably about all you can do.
 
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Old 02-06-2013 | 11:00 PM
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Information removed.
 

Last edited by ES6T; 03-02-2013 at 11:37 PM.
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Old 02-07-2013 | 02:34 AM
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Use a dremel to make it a flat blade screw, then use a big flat blade screwdriver to get it out.
 
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Old 02-07-2013 | 06:22 AM
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Good tips. You can also just break the cover off and toss it in the trash, many have. Once off you can vice grip it out.

You can get another from a junk yard for $10 or less. Heck I'm pretty sure I have one you can have if you pay shipping. It may have a small crack on it. I'll even send you another screw.

The big thing is, if you put it back on, don't tighten those screws to much, snug is plenty.
 
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Old 02-09-2013 | 06:40 PM
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I had that same problem once. I was able to gently tap an allen bit into the hole to mold it then get it out. The tapping helped losen it as well.
 
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Old 02-09-2013 | 09:12 PM
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I would use a dremel to cut a slot for a flat blade screw driver, like others mentioned above. Always works great for me!

If its really stubborn, you could do that and then tap around the edges of it to try and tap it free, kind of like hitting the edge of a jar lid repeatedly with a fork or something to break it loose.
 
  #8  
Old 02-09-2013 | 10:34 PM
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Most of the time this happens because the wrong size torx was used. If this was the case, using the correct size and tapping into place can get them out. (I am guilty here)

Great ideas from everyone.
 
  #9  
Old 02-10-2013 | 10:19 PM
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Slotting might be easiest, next would be drilling the head off and using a vise grip if possible or drilling and using an easy out.
 
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  #10  
Old 03-17-2013 | 09:06 PM
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Hey, thanks for the great advice everyone.
 
  #11  
Old 03-17-2013 | 09:30 PM
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So... what did you do?
 
  #12  
Old 03-30-2013 | 09:45 PM
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I ended up slotting a flathead into the top of the screw, then got it out with a screwdriver bit on a power drill.
 
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