Reply To: Gt125 running problems Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Gt125 running problems Reply To: Gt125 running problems Apr 29, 2021 at 5:15 PM #5797 markMember Topics: 1Replies: 3@4800mark swanseagt125r gt650r The compression on both cylinder is 150 psi and stays at 150 psi