OK, here is the story. I had (key word here....HAD) a 15 foot bowrider with a 1971 Model Johnson 100hp outboard. I sold the boat a few weeks ago (looking for a pontoon now), the week before I sold the boat my wife and I had the boat on the lake, and it ran fine. The boat has always been very hard to start. I had to prime it a lot, but after about 5-8 minutes of trying to start it, it always started. Now after the initial hard start, it ran perfect. Cranked with just a bump of the key. I talked with some other owners of the older Johnson and they all told me that they were hard to start. OK, here is the good part. When I sold the boat, I told the guy that bought it, that the boat was hard to start. I offered to take him to the lake and show him the ropes but he refused, so I just put the muffs on the engine and showed him how to crank it. I told him again that the boat was hard to start. After about 5 minutes of trying the boat started and it ran for a few minutes. I showed him how easy it started AFTER the initial hard start. He was happy and took the boat and went on his way. Well, this morning he shows up and my house wanting me to pay half of the $500 bill that it took to get the boat "fixed". Supposedly, he took the boat to a jack leg mechanic and the mechanic told him that the coil pack was bad and this was the reason for the hard starts and it was only running on 3 cylinders. Now, i am not a genuis, but I have been around enough cars to know, that if a cylinder is dead, you would DEFINATELY know it. Like I said, I just had the boat out the week before he bought it, and it ran fine......34-36 mph fully loaded. My question is mainly this.....would a bad coil pack just mean hard starts, or would a bad coil pack mean no run at all? And would a dead cylinder be easy to detect when the boat was in the water and running????<br />Any ideas, comments or suggestions are always appreciated. Thanks