I got this 25HP Johnson and am trying to get it to run better... a LOT better!
I have attached a couple of videos for your viewing pleasure. Here are some specifics.
The motor has been sitting for years inside. (So the previous owner tells me.)
The motor ran fine the last time it was used (famous last words).
The coils, points, spark plugs, wires are new (plugs are NGK) I cleaned and re-gapped points to .20, plugs to .25
Carb was spotlessly clean. Hoses were dry rotted so I replaces them.
Compression is 110 on both cylinders.
Because it has not been run in years, I put 16:1 fuel mix in it. It still should not smoke like it does.
I have to run the motor with the high speed at at least 2 1/2 turns or more to keep it running. Or keep the choke 3/4 closed.
You can forget about an idle!
Both plug wires have nice blue spark. Even when I pull the plug wire off, I can see a blue park jump to the plug, but it runs like crap.
I thought it was a carb issue until I played with pulling the plug wires off while running. (see videos)
Can you help me with why this motor runs so bad?
Thank you for your help.https://youtu.be/W8S3BAh-EQYhttps://youtu.be/CGo7etm01S0