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1996 Johnson 112spl running slow in full throttle

Cola

New member
I have a 96 Johnson 112spl running really slow 8-9mph when It's in full throttle. Sometimes after 10 mins it would kick in and go 25 mph but not all the time.
I tried cleaning the carbs & replaced full pump.
Any ideas or suggestions would greatly appreciated.
 
You start with a compression test on those motors.------Then check for proper spark.--------Spark must jump a gap of 3/8" or more on all leads.
 
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