1976 15hp Johnson not reaching full throttle.

rzpalm

Cadet
Joined
Mar 2, 2014
Messages
25
Bought the motor a few weeks ago. Guy cranked it in barrel and it ran good. On my boat it would die when I gave it a little gas or if I floored it it would run but no power. It was only pushing my 1436 aluminum jon boat 12 mph. Never seemed like it was reaching WOT. So I did the spark test by pulling the boots. Only the bottom cylinder was running. Got that fixed and now I can pull either boot and motor will stay running. So, I took in it to the river tonight. It has great power out of the hole but isn't pushing my boat but 15 mph still sounds like its running about 60% throttle. Also it will die at full throttle if the choke is all the way in. I can only run it with choke half way pulled out. So.... how do I fix this.
Thanks
Zac
 

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,398
Basic health check. Compression, spark, fuel delivery. How much motor is in the water ??
 

rzpalm

Cadet
Joined
Mar 2, 2014
Messages
25
Cleaned carb and put back in. After I got it back in noticed that something is out sack with throttle linkage it won't turn all they way to the stop
 
Top