78 Johnson 115 Cold start Issue

phx5kegsman

Petty Officer 3rd Class
Joined
Apr 10, 2021
Messages
83
Hi the problem I'm having is that my motor won't start when its cold. This motor has a choke solenoid that energizes when you push the key in. I can hear the solenoid closing the butterflies, but the motor still will not start. I have to remove the cover and operate the manual choke lever and it fires right up! Put the cover back on and away I go. Motor runs great and will start up in between fishing pots UNLESS I let it sit for too long. Then it's the same thing manual choke lever and it starts!
Any suggestions? Thanks
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,836
Adjust the choke solenoid.----And have your battery load tested.-----A fast spinning flywheel is needed to get near instant starting on these fine motors.
 

phx5kegsman

Petty Officer 3rd Class
Joined
Apr 10, 2021
Messages
83
Thanks. I will load test the battery Any idea what the cranking amp requirements are for this motor. Also, I have noticed that the motor doesn't trim up/down very fast at all. Tilt up/down is quick and smooth. Could that be battery related, as well? Mine is the old solenoid type type
 

phx5kegsman

Petty Officer 3rd Class
Joined
Apr 10, 2021
Messages
83
Battery failed load test. I'll get a new one and report back with the results. Any recommendations for a good start battery for these motors. I will also run a sonar/GPS fish finder, Nav and stern lights, bilge pump, and gauges off this battery. Thanks
 
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