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1977 140hp johnsom starting issue

S

strybie

New member
Hi i have a 1977 140hp johnson on my old pride skiboat i bought as a project motor wasnt running when i purchased.
i have since replaced carby's ,fuel pump, sparkplugs and coil pack and the motor runs start pretty good pulls me out of the water no worries.
The issue i have is when im starting from cold i have to lift the throttle advance and use a little choke to start witch starts fine but after the motor has warmed up i can never start the motor without having to use the throttle advance everytime i start it.
More just annoying cause when it fire motor is scraming its head off until i drop lever and idea ?timing issue ?
 
So, it is running well and idles well? Not a timing issue. More likely a synchronization problem, especially since you replaced the carbs. Or an idle speed issue. Or a choke issue. Too many possibilities to consider without a thorough diagnostic procedure.
 
fdrgator said:
So, it is running well and idles well? Not a timing issue. More likely a synchronization problem, especially since you replaced the carbs. Or an idle speed issue. Or a choke issue. Too many possibilities to consider without a thorough diagnostic procedure.
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yes it runs well idles fine u just cant start it without without use the timing advance
 
The downloadable ones I've seen are 3d party manuals, not factory. I'm not saying you can't download a factory manual but the 3d party manuals are generally poor compared to the genuine article.
 
PhilSch said:
The downloadable ones I've seen are 3d party manuals, not factory. I'm not saying you can't download a factory manual but the 3d party manuals are generally poor compared to the genuine article.
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The manual seems pretty detailed

so since it idles fine and runs fine pull me 110kg skier out of water am I safe to say timing is okay and need to adjust the linkages for start like I said before runs well apart from having to lift throttle control lever ever time I need to start with motor hot or cold
 
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