Assertion: spark plug's gap | /r/CapableOf | widen as a plug ages
Facets:
Source sentences:
text: As a plug ages, and the metal of both the tip and hook erode, the gap will tend to widen.
text: As a plug ages, and the metal of both the tip and hook erode, the gap will tend to widen; therefore experienced mechanics often set the gap on new plugs at the engine manufacturer's minimum recommended gap, rather than in the middle of the specified acceptable range, to ensure longer life between plug changes.