I've got a 1962 Evinrude sportswin. Model is 10024A.
Here's the symptoms - The motor will crank and spark with the choke pulled out, and sometimes it will even start up for a second or 2. Once it does this, it won't start again until the choke has been fully pushed in. Then it will start up and run fine for about 5-10 seconds, then it will pick up RPMs, and despite lowering the throttle, the motor won't stop revving. Then it will sputter, jump a few times, then cough and slowly die out. PSI is about 64-65 on both cylinders.
Here's what I've replaced so far: Impeller, thermostat, carb rebuilt, fuel filter, fuel lines.
I've also cleaned and inspected the fuel pump. I noticed that It pushed fuel out with the fuel lines disconnected to the fuel filter, I'm not sure if it's supposed to do that or not, but it's definitely moving fuel. I've tried to adjust the slow needle but no matter what position I put it at I get the same problem.
Finally, gave it new fuel, gapped the plugs, and checked the spark - The spark is bright white. Top cylinder gives me a weak orange spark every once in a while, but it's not consistent. I did take a look at the coils and points through the flywheel and they appear to be in pretty good shape.
This is my first project motor, so just trying to get some more advice on were to go from here as I'm not really sure what the problem could be at this point. It ran pretty well the first time I used but haven't been ablet to get it to start consistently since then.
Quick side note, just noticed my fuel tank doesn't seem to be venting the fumes, have one of those newer plastic ones. Could this be the cause?
Here's the symptoms - The motor will crank and spark with the choke pulled out, and sometimes it will even start up for a second or 2. Once it does this, it won't start again until the choke has been fully pushed in. Then it will start up and run fine for about 5-10 seconds, then it will pick up RPMs, and despite lowering the throttle, the motor won't stop revving. Then it will sputter, jump a few times, then cough and slowly die out. PSI is about 64-65 on both cylinders.
Here's what I've replaced so far: Impeller, thermostat, carb rebuilt, fuel filter, fuel lines.
I've also cleaned and inspected the fuel pump. I noticed that It pushed fuel out with the fuel lines disconnected to the fuel filter, I'm not sure if it's supposed to do that or not, but it's definitely moving fuel. I've tried to adjust the slow needle but no matter what position I put it at I get the same problem.
Finally, gave it new fuel, gapped the plugs, and checked the spark - The spark is bright white. Top cylinder gives me a weak orange spark every once in a while, but it's not consistent. I did take a look at the coils and points through the flywheel and they appear to be in pretty good shape.
This is my first project motor, so just trying to get some more advice on were to go from here as I'm not really sure what the problem could be at this point. It ran pretty well the first time I used but haven't been ablet to get it to start consistently since then.
Quick side note, just noticed my fuel tank doesn't seem to be venting the fumes, have one of those newer plastic ones. Could this be the cause?
