1994 Johnson 50 cutting in and out once motor warms up

jakejerome89

Recruit
Joined
Jun 19, 2021
Messages
1
I’m stumped on this one. My motor runs fun until about 10 minutes (once it’s warmed up I’m assuming) and then it starts to drop in and out spontaneously. It’ll drop rpm like it’s starved for fuel then cone right back, sometimes does it over and over sometimes does it every once in a while.
Here is what I’ve done so far:
Replaced All fuel lines, fittings, and fuel tank
Power pack, coil, spark plugs
Rebuilt/cleaned both carburetors
Changed fuel pump.
Both cylinders hold 130lbs

Motor thermostat was stuck for I don’t know how long, but I replaced it and now it’s cooling fine now. I’ve attached a video which you can here it dropping into and out. Please help me!!
View attachment FullSizeRender.mov
 
Top