96' 50 johnson odd idle issue

whalerfreak22

Petty Officer 3rd Class
Joined
Jul 16, 2008
Messages
76
Ive heard these series motors (40,48,50)dont like to idle but ive got a strange problem.when the motor is tilted all the way down it sounds like its running on 1 cyl or barely two(it almost wants to stall) but when i trim it up half way before the cavatation plates out of the water it runs very smooth.anyone ever have this issue or know how to diagnose it?:confused:



-Keith
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: 96' 50 johnson odd idle issue

Get a good insulated pliers and do a cyl drop test on it to see if both cyl's are firing. Pull one spark plug wire off at a time and see if you notice a drop in rpm. The cyl that doesn't drop could have fuel, ignition or compression probs.
 
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