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spark plug tip color vs how engine is running


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hey guys, I left my damn haynes manual at the shop. I'm at home comp testing my motor. got the plugs out. tips are kinda greyish/white.

 

Motor is running lean?

 

Comp #'s are

 

#1 - 138

#3 - 150

#2 - 136

#4 - 140

 

number seem good..

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hey guys, I left my damn haynes manual at the shop. I'm at home comp testing my motor. got the plugs out. tips are kinda greyish/white.

 

Motor is running lean?

 

Comp #'s are

 

#1 - 138

#3 - 150

#2 - 136

#4 - 140

 

number seem good..

Should have a brown to light brown tint. White is too lean or hot.
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