AEROCOOK
Master Chief Petty Officer
- Joined
- Jul 28, 2004
- Messages
- 872
First of all, I apologize for the long winded post, but I want to provide as much detail as possible.
Just got back from a week at the lake and Im looking for a little advice on diagnosing a stumble or misfire on my 1988 Johnson 110.
The motor runs very smoothly at idle whether in neutral at 750 rpm or in gear at 650 rpm and it also runs smoothly above 1800 rpms. The problem I have is a very distinct stumble or misfire when I accelerate from idle up to around 1800 rpm then as it passes 1800, it smoothes right out. So far I have performed a link and sync as detailed in my factory service manual, set the WOT timing using the Joe Reeves method, replaced the plugs, cleaned the carbs and still the problem persists.
Looking through the carb section in the manual I saw what were described as intermediate orifices and I am wondering what their specific function is? when I cleaned the carbs last year by soaking them in carb cleaner (a no-no according to the manual) I didnt access these orifices as they were concealed under the concave plugs and I didnt have new plugs to put in so I left them alone.
Any ideas?
Just got back from a week at the lake and Im looking for a little advice on diagnosing a stumble or misfire on my 1988 Johnson 110.
The motor runs very smoothly at idle whether in neutral at 750 rpm or in gear at 650 rpm and it also runs smoothly above 1800 rpms. The problem I have is a very distinct stumble or misfire when I accelerate from idle up to around 1800 rpm then as it passes 1800, it smoothes right out. So far I have performed a link and sync as detailed in my factory service manual, set the WOT timing using the Joe Reeves method, replaced the plugs, cleaned the carbs and still the problem persists.
Looking through the carb section in the manual I saw what were described as intermediate orifices and I am wondering what their specific function is? when I cleaned the carbs last year by soaking them in carb cleaner (a no-no according to the manual) I didnt access these orifices as they were concealed under the concave plugs and I didnt have new plugs to put in so I left them alone.
Any ideas?