POPPING GLO PLUGS

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Old 10-29-2010, 06:57 PM
  #16  
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This exact issue happened to me on my Nova Flash Special 0.21.

In my case, the car ran flawlessly until I stopped it. At the next attempt to start, the plug was found warped/distorted.

I added a 1mm shim and problem NEVER re-occurred.

Also, it wouldn't hurt to double check the health of your bearings. Debris could be destroying your plugs (this is only valide if you find your plugs distorted and/or with missing coil.
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Old 10-30-2010, 03:09 AM
  #17  
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i assume you meant 0.1mm shim?

by the way, which is a better method/way to retard the timing? adding 0.1mm head shim or using a colder plug? and why?
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Old 10-30-2010, 05:43 AM
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Originally Posted by keavze View Post
i assume you meant 0.1mm shim?

by the way, which is a better method/way to retard the timing? adding 0.1mm head shim or using a colder plug? and why?
Yes, I meant 0.1mm shim.

For the issue that I experienced, changing the plug to a colder one (in my case a 7 to 8) didn't help at all, in fact made the situation worse. Increasing the head clearance with the shim did the trick. Now my plugs seem to last forever.
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Old 10-30-2010, 01:26 PM
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The plug looks fine when it comes out.No peppering on top of piston.
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