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Fouled plug pics...diagnosis please?

bradleyheathhays

By bradleyheathhays
in Yamaha ATV Forum

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bradleyheathhays

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Posted (edited)

Here's what just came out of the old '11 700 Grizz...

plug%201_zpssrkubckb.jpg

plug%202_zpsze4izhav.jpg

plug%203_zpslnq6h2a9.jpg

The pics indicate some kind of build up on 3 surfaces...the base ring, and on both the electrode and ceramic opposite where the strap attaches. What condition does this suggest?

Also, this article...

How to read Racing Spark Plugs - Dragstuff

indicates since there's no color change in the middle of the ground strap that there's some type of temp problem. Or does this not apply as the article is talking about racing spark plugs?

Thanks

Edited by bradleyheathhays
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