Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Seized spark plugs › Reply To: Seized spark plugs April 19, 2020 at 9:26 am #954352 Peter GoslingParticipant PB blaster or Inox ,if neither of these are avalible simple old Diesel fuel, got to let it sit for a day or two & gently forward & back dont force it to much or u will be heli coiling the head…..