Thermoquad on 340 (plug photos)
How do these look? Timing at 20/32...
Still no color, and no fuel ring at the base of the porcelain. A/F #'s very good on the meter. 15 miles of spirited driving, shouldn't I see something on the plug base or at base of porcelain?
How do these look? Timing at 20/32...
Still no color, and no fuel ring at the base of the porcelain. A/F #'s very good on the meter. 15 miles of spirited driving, shouldn't I see something on the plug base or at base of porcelain?