1972 Johnson choking

[YFISH]

My '72 Johnson 50HP won't fire up. It was working fine when I bought it used. After the winter months, it ran great a few more times and the last time I used it wasn't running as fast as it used to. I'm a first time boat owner, who knows how to fix a car, but boat motors I have no clue about. Tried to fix it, but now it's dumping alot of fuel and doesn't fire up. Also, the the lean & rich adjusters are missing, don't know how to adjust the fuse without the knob. Help??

 

[crxess]

Re: 1972 Johnson choking

Well, it sounds like you need to go through the carbs. Make sure everything is clean and assembled properly. Confirm float adjustment.

 

[tashasdaddy]

Re: 1972 Johnson choking

you don't need the knobs. http://forums.iboats.com/showthread.php?t=167352

 

[YFISH]

Re: 1972 Johnson choking

Thanks for the help. I will try to resolve that issue. One more question, I hope I'm explaining this right. How does the fuel transfer into the 2 carb chamber? My Johnson has 2 carb, only one of the carb receives fuel. Why doesn't the other carb receive any fuel? It has a small fuel line connected to each other, but the other doesn't receive any fuel. What would be the problem there?

 

[crxess]

Re: 1972 Johnson choking

Loosen the line on teh carb not receiving fuel. turn the motor over. If fuel leaks from the line then the carb float/pin is stuck closed or blocked with trash.

 

[YFISH]

Re: 1972 Johnson choking

Thank you for the response. I checked for that and everything is fine. What I've noticed is that it's flooding my sparksplug. How do I keep it from flooding out my sparksplug? It causes the motor not to fire up. Can the amount of fuel flow be adjusted?