if the new sparks got overfueled,,and black,,,but now thw problem is fixed,,,could you still use the plugs that where blackened,,,,would a 1/2 hour cruise clean them up???? i know replaceing them would be better,,,then plugs in question have 10 hours on them

They should clean themselves up. What did they find wrong ?

use a little thinner in a cup w/ an old tooth brush to clean the heavy soot off and then put em back in.

they havent touched it yet,,ill let u know what we fine,,,thanx,,,i did reset the pressure regulator,,,key on engine off

you have to be an acrobat,,,to change them that why i was asking if i could just go for a run