Gator McClusky
Well-known member
Good morning,
OK, I have been trying to figure this out on my own but........ Here I am!
I have a 1977 15 hp Johnson- 15R77M...... I bought it about 2 weeks ago, it fired up and shut right back off when I looked at it the first time. Tried pulling it and no go.The negotiations begin and I wind up with this motor and a '72 16' Ouachita and trailer.... for $650.00....
Anyhow, Cant get it to crank so I removed the carb....looks like it was just rebuilt as the prev. owner told me. Sprayed it down, removed bowl and saw a few small gritty pieces in the bottom of the bowl. sprayed thru the port from bowl to chamber and all clear. Float appeared to be ok. Put factory speced plugs in (champion). Key way is in line so timeing should be good. New Power Pack yesterday spark looks blue now but still not cranking. Anyway, I have spark, I have fuel, I have air!!!!!!!!! Why would I not not have combustion.....could I be flooding? Not sure who rebuilt the carb or what else I should have checked on it for blockage or maybe even damage from being gauged out by someone else cleaning it.
The spark is enough to ignite the fuel outside the motor while checking for spark as the fuel sprays out of the plug port. Actually blazed right up for a second and I got it out immediatly. No damage. Mom wanted me to back it up to her house and work on it when she saw that!!!! lol
The plan is to leave work early and get two coils and put on it today. I dont mind putting money in it as the parts are all original (35 years old). I just want an understanding of how to check the power pack and diagnose one that is bad. I ohmed the coils out and they were fine or at least both reading the same.
Am I missing something with the carb? What should I check or replace under the flywheel. I have been reading up on the Capacitor Discharge Ignition but need a much better understanding. hard to find specs on the power pack and I dont have a peak reading multi meter, or at least I dont think I do. Who is out there that can lend a few ideas or instructions, the mechanic I talk to will not work on this old motor although he did show me a few things when the pull starter spring came apart. I got it wound back up and placed back in the housing but I wasnt sure about the clip that locks into the bar. He is very short with people so he is not always happiest person in the world but I still try to talk to him.
Man I love this site, I read stuf that doesnt even pertain to my situation. Ready for something new!
Anyway, thanks in advance for the help!
OK, I have been trying to figure this out on my own but........ Here I am!
I have a 1977 15 hp Johnson- 15R77M...... I bought it about 2 weeks ago, it fired up and shut right back off when I looked at it the first time. Tried pulling it and no go.The negotiations begin and I wind up with this motor and a '72 16' Ouachita and trailer.... for $650.00....
Anyhow, Cant get it to crank so I removed the carb....looks like it was just rebuilt as the prev. owner told me. Sprayed it down, removed bowl and saw a few small gritty pieces in the bottom of the bowl. sprayed thru the port from bowl to chamber and all clear. Float appeared to be ok. Put factory speced plugs in (champion). Key way is in line so timeing should be good. New Power Pack yesterday spark looks blue now but still not cranking. Anyway, I have spark, I have fuel, I have air!!!!!!!!! Why would I not not have combustion.....could I be flooding? Not sure who rebuilt the carb or what else I should have checked on it for blockage or maybe even damage from being gauged out by someone else cleaning it.
The spark is enough to ignite the fuel outside the motor while checking for spark as the fuel sprays out of the plug port. Actually blazed right up for a second and I got it out immediatly. No damage. Mom wanted me to back it up to her house and work on it when she saw that!!!! lol
The plan is to leave work early and get two coils and put on it today. I dont mind putting money in it as the parts are all original (35 years old). I just want an understanding of how to check the power pack and diagnose one that is bad. I ohmed the coils out and they were fine or at least both reading the same.
Am I missing something with the carb? What should I check or replace under the flywheel. I have been reading up on the Capacitor Discharge Ignition but need a much better understanding. hard to find specs on the power pack and I dont have a peak reading multi meter, or at least I dont think I do. Who is out there that can lend a few ideas or instructions, the mechanic I talk to will not work on this old motor although he did show me a few things when the pull starter spring came apart. I got it wound back up and placed back in the housing but I wasnt sure about the clip that locks into the bar. He is very short with people so he is not always happiest person in the world but I still try to talk to him.
Man I love this site, I read stuf that doesnt even pertain to my situation. Ready for something new!
Anyway, thanks in advance for the help!