1991 johnson wont run

[tweeken]

"was running fine a week ago j

"was running fine a week ago just started to need to be at full throttle to start, now will rarley even start at full throttle and dies in seconds after it starts. drained all 3 carbs and switched to new fuel.. the carbs are spotless and no dirt or water in them.. changed spark plugs... it started at full throttle and reved way up and died again... now it will pop once and a while but thats it... fuel is pouring out of pump, filter and all are ok but just wont run ???????????????"

 

[Sleeper]

"Your symptoms describe a clas

"Your symptoms describe a classic fuel delivery problem. If you are absolutely sure it isn't that, then it must be either spark, compression, or timing. Do you have strong spark on all three cylinders? What kind of compression readings do you have?"