a used spark plug should be covered with some black soot when removed - whit soot means its been running hot or detonating
here's a handy chart!~
Should look tan like the upper left picture bob posted. Edited for spelling.
Looking for a Used Dakota in your area?
CarGurus has 151 nationwide Dakota listings starting at $1,995.
Search Dodge Dakota Questions
Dodge Dakota Experts
Related Models For Sale
Used Cars For Sale