1986 merc 115 tower of power kicking in and out

lhos

Recruit
Joined
Jun 13, 2020
Messages
1
.I have a 115 merc tower of power inline.. carbs just got back from shop cleaned and rebuilt and compression is 90psi on all cylinders. new primer bulb. idles fine and will go to almost 2000rpms and just cut in and out every couple of seconds . you can feel it pushing the boat kicking when it kicks in. any suggestions would be greatly appreciated. thinking switchbox breaking under load down but I really don't have a clue.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,561
Pump the primer bulb while accelerating. If that fixes it, the fuel pump/fuel line has an issue.

Merc stators have a high speed and a low speed winding. Maybe your high speed winding has an issue.
 
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