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Spark Plug Question

djleatherb15

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Hello, I just bought some Denso PK16TT spark plugs and I gapped them at 0.054 but the plugs are gapped at 0.040 is it okay that I gapped them? Are these plugs good or not?
 



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Wolfie_85

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You got the gap right. I've never used those, so all I can say is try 'em. These don't really need extravagant plugs, platinum Autolites or Motorcrafts are what I use. Copper is ok, too.
 






djleatherb15

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Turns out the ones that I got don't need to be gapped as they are already gapped when they leave the factory. Now I get to take them all out again and regap them to factory settings.
 






swshawaii

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NEVER follow that "pre gapped" BS. Other engines using the same plug have different gaps. A bump on the snout changes gaps too.
 






2stroke

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I gap every plug, and always have. I have never once trusted pre-gapped plugs. I think .054-.056 is the gap range, but I could be wrong.
 






natenkiki2004

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Gapping is good but on the platinum ones, be careful, you need to use the proper tool to adjust the gap and not pry on the platinum tips.
 






2stroke

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Gapping is good but on the platinum ones, be careful, you need to use the proper tool to adjust the gap and not pry on the platinum tips.

I never knew that, but then again I've never bought a platinum plug before. I run standard plugs without issue in every engine I own. Its good to learn new things. Can you still tap them to close the gap on platinum's?
 






natenkiki2004

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I never knew that, but then again I've never bought a platinum plug before. I run standard plugs without issue in every engine I own. Its good to learn new things. Can you still tap them to close the gap on platinum's?

Yea, that's fine, you just don't get a good amount of control that way. A lot of people will say that you can't gap them but it's BS. Just be gentle and don't try to jam/wedge something against the platinum spots.
 






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