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    1990 evinrude 70hp boggs down at high speed

    Took the boat out a few times hasn’t skipped a beat since I did the work got it up to 4500 rpm and then tried to go to WOT but now the motor won’t spin higher than 4200 not sure if it’s one cylinder not getting spark or something completely different. Runs smooth but I’m not sure any help would...
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    1990 evinrude 70hp boggs down at high speed

    I changed plugs, wires, coils and power pack today went for a ride motor ran great no problems got it spinning to about 5k rpm didn’t hesitate at all. Shut the boat off started it back up got back up on plane tried opening it up to see if it would act up and the motor would not go passed 4K rpm...
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    1990 evinrude 70hp boggs down at high speed

    On my 1999 90 hp Johnson I’m having a similar issue where one day it will run great and the next it will bog down and get worse if I increase the rpm. It never shuts off and idles without a problem. I went through the whole fuel system and ran it on an external tank but did not help. Heard...
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