Re: HD25 Piston Removal Home › Forum › Ask A Member › HD25 › Re: HD25 Piston Removal The Boat HouseReplies: 4549Topics: 111 June 5, 2018 at 2:04 pm #77461 quote Shane.R13: I have spark and fuel Bring one piston up to TDC and check that the plug wire for that cylinder is going to the coil that is going to the points that have opened for that cylinder.