Wierd spark plug color. (RUST COLOR)
Trying to tune the bike a bit. The spark plug and motor have less than 2.5 hours. The spark plug is not white, carmel, or black colored...... but instead a true looking red/rust color. Im on Opti 2 at 40:1 still breaking in with 92 octane on a 66 cc slant head. Runs fine!