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Evinrude 15 Hp Very cold starting and low power later in the day

T

trying02

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I have a 1983 Evinrude 15 hp electric start and in the cool mornings it takes a lot of turning it over to get it to start trying to fire and then more to get it to start. once warm it will start right off. Warm afternoon at home it starts right up. If it was pull start it would never work. New fuel pump, new line bulb pump. carburetor has been rebuilt. Pull down to the lake in the mornings and always has difficulties starting. 1 more thing I can run most all-day fishing 10 minuets to a spot another 10 to 15 minutes to other spots a few times and then later in the day it will start to lose power and die, start back run with low power trying to die. Could the problem be 1 in the same? Any help would be appreciated. Thanks.
 
Remote electric start?---Replaced the water pump impeller ?------Are you pushing key in ( holding it in ) while cranking it over for cold starting
 
Does electric choke actually work ?----Post the actual compression test values here.----Does spark jump a gap of 3/8" on both leads ?
 
Yes the choke works. I checked the compression, and it was good don't remember what it was, but i can check again I bought a test kit and give you that reading if you think that would help. when you say jump a gap do you mean pull the plug wire form the plug and hold it off the plug 3/8 and turn the motor over and see how far the spark will jump, I can do that maybe tomorrow. New plugs also. Thanks for your help. :)
 
Racerone, will it hurt the impeller to turn the engine over dry to do these tests? I will run the engine and run the carb dry before the test are done so the impeller will be wet / damp. thanks again. Trying02
 
Sorry----I can not see , hear or touch your motor.----You have to present FACTS so you can get the help , to solve the simple issue with this motor
 
Racerone to answer your question. top cylinder 112 psi, bottom 114 psi. spark is 3/8 or more and strong on top and bottom barely makes 3/8 and is a weaker looking spark Evinrude model E15ECTR SN 0268554 1983 long shaft. using Champion plugs QL77JC4 at top speed it pushes a 1990 Tracker Pro 17 at about 12 to13 MPH per a boating app. Thanks for the help.
 
Are you advancing throttle to the neutral interlock when cold starting ?-----Is the battery good and load tested?----Is the starter motor in good condition ?
 
Not sure what you mean advancing throttle to neutral interlock? battery is new with full charge i use a trickle charger with an auto cutoff. the starter turns over fast.
 
trying02 said:
Not sure what you mean advancing throttle to neutral interlock? battery is new with full charge i use a trickle charger with an auto cutoff. the starter turns over fast.
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Open the throttle as far as it will go, with shifter in neutral. It will hit the interlock & not allow any more throttle movement, until shifted into gear. The interlock prevents starting at high power settings. I’m assuming your interlock works…
 
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