clean spark plugs

[ERIC60]

since my timing + carburation has been adjusted by a professional, my truck starts straight away and runs fine, but the spark plugs are clean, not color "cream coffee" like before; do you think it's normal or could it harm the engine? (69 1000D 304)

 

[int77345]

is it possible to get a picture of the plug ?

who was the professional ? any idea what adjustments were made ?

 

[ERIC60]

a picture would not help since the appearance is clean, like a new one; the professional is specialized in classic car restoration and , as said before, set the timing and the mixture on carb; and the truck is running great; but if you think it's essential, I can take a picture;

 

[FDChappie]

Clean is good. Sounds like you found a shop that knows what they are doing. Modern gas does not leave deposits like it used to.

 

[ERIC60]

Clean is good. Sounds like you found a shop that knows what they are doing. Modern gas does not leave deposits like it used to.

cool!! I was wondering because it's the first time I see no color on a spark plug; all my cars so far had this color "cream coffee";

 

[Robert Kenney]

Totally normal, my original 1968 304 always ran white plugs. It needed a little more fuel in the main jets and it ran super well. IIRC factory mains were 59 I went to 62. Picked up the lost power still had white plugs.
Just a back story on the logic behind richening up of fuel air ratios on old engines.
All modern fuels have alcohol in them, about 10+%. Alcohol runs at 6-1 fuel to air, gasoline likes 14-1. This means an engine originally tuned for old school gasoline and now running modern fuel will require a jetting up size to really be correct fuel to air ratio.

A note on plug reading, look down between the center ceramic and the metal body, it will show color most. The extended tip can run hot enough to burn off all traces of color especially on new plugs and a well running engine..