1978 85hp bogging down

Dennischaves

Chief Petty Officer
Thread starter
Joined
Nov 9, 2016
Messages
439
my 1978 Johnson 85hp idles well and at 5mph it runs great
as soon as I open up the throttle it accelerates for a second then bogs down
if I wait a few minutes it will do the same when I apply the throttle but if I don't wait and immediately apply throttle after it bogs it won't accelerate for a second like it does if I wait a few minutes
the motor is new to me it ran great in a barrel and compression is 115 112 116 115
and spark is jumping 7/16
should I start with a carb rebuild?
or any other suggestions
 

Dennischaves

Chief Petty Officer
Thread starter
Joined
Nov 9, 2016
Messages
439
well I started taking the carbs off today
first thing I noticed was the plates that close when you apply the choke were not fully open after I released the choke they were only opening about a 1/4 inch
 
Top