P Papa5633 Premium Member Premium Member Jul 21, 2024 #1 Pulled plugs on 96 SPX and both have a shiny black residue. Pop-off is set at 50 psi and using 1.2 seats. Is this indicative of a rich mixture?
Pulled plugs on 96 SPX and both have a shiny black residue. Pop-off is set at 50 psi and using 1.2 seats. Is this indicative of a rich mixture?
mikidymac Moderator Staff member Moderator Aug 12, 2024 #2 It is a 2-stroke so they will be black/brown.
