Good morning. We are working on an 82 15 hp Johnson model number E15RCNC.
This motor has maybe up to 100 hours on it. It was left in a box for the first 35 years since 82 and never opened. Then put on a boat a few years ago. It ran well for a season, but now it will still start right up on a couple pulls and run great. However, after a run across the lake, if shut off, it will not start again. We checked when hot and it has good spark and fuel still in the carb, Plugs will get wet with continued trying to start, Installed new plugs when motor still hot and no difference, Hitting it with starting fluid will not start it or even get a cough out of it. If you let it sit for many hours until cold again or overnight, it will start again on a few pulls and run well again until you shut it off. Understanding it is almost 40 years old, the owner had new stator, pickup, power pack, coils, and plugs installed. He used CDI parts. There was no change, It will still start right up when cold, runs great until shut off, then wont start again until cold. Compression is 120 on each cylinder, Plugs are the recommended champion L77J4. Runs off a 5 gallon red plastic new tank, new fuel, new lines, tank is vented. Carb was pulled and is clean. Its not flooding over at all. If left running, it will idle, run stong, idle again, run well, but if you shut it off, it will not start.
Any thoughts on this one, All connectors are just plug in type, motor still looks new with no corrosion, it is used only in fresh water. Are there any known parts on this motor that are know to quit when they get hot? I appreciate you help. Truly baffling.
This motor has maybe up to 100 hours on it. It was left in a box for the first 35 years since 82 and never opened. Then put on a boat a few years ago. It ran well for a season, but now it will still start right up on a couple pulls and run great. However, after a run across the lake, if shut off, it will not start again. We checked when hot and it has good spark and fuel still in the carb, Plugs will get wet with continued trying to start, Installed new plugs when motor still hot and no difference, Hitting it with starting fluid will not start it or even get a cough out of it. If you let it sit for many hours until cold again or overnight, it will start again on a few pulls and run well again until you shut it off. Understanding it is almost 40 years old, the owner had new stator, pickup, power pack, coils, and plugs installed. He used CDI parts. There was no change, It will still start right up when cold, runs great until shut off, then wont start again until cold. Compression is 120 on each cylinder, Plugs are the recommended champion L77J4. Runs off a 5 gallon red plastic new tank, new fuel, new lines, tank is vented. Carb was pulled and is clean. Its not flooding over at all. If left running, it will idle, run stong, idle again, run well, but if you shut it off, it will not start.
Any thoughts on this one, All connectors are just plug in type, motor still looks new with no corrosion, it is used only in fresh water. Are there any known parts on this motor that are know to quit when they get hot? I appreciate you help. Truly baffling.
