help bogging down

[fishmaster]

I need some help please. I have an 83 johnson 70hp. The carbs have been rebuilt and it still boggs and will not run wot the tach has quit working. My question is could the stater cause this problem I replaced the rectifer and no change. thanks for any help given

 

[12Footer]

Re: help bogging down

Not much on Johnnyurudes, but the symptoms you describe sound like defective stator.Did the tach quit at the same time the other symptoms surfaced? I would get the manual and a volt/ohmeter, and check it before switching-out expensive components..<br />But it sure do sound like stator failure.

 

[Steve135]

Re: help bogging down

fishmaster use the search and see this has been hashed out a bunch of times on the same motor including your year. There must be 50 things you can read about fixing the same problems that <br />70 hp Jonnyrude is famous for!<br />steve

 

[fishmaster]

Re: help bogging down

ok guys help please I think the stator is bad but not clear on how to check. the copression is 150 on all three cyindlers. the bottom cyindler is dropping out then it might come back for awhile then do it on and off dose not seem to be any pattern to it thanks for all the help in the past and now the furture

 

[ajp]

Re: help bogging down

Why do you think the stator is bad? (A Guess)<br /><br />What steps did you take to determine that? (Factory Manual Trouble Shooting)<br /><br />Do you know what the stator does? (Battery Charging System)<br /><br />I would be more likely to think that fuel starvation is the cause. Have you tried choking the motor right before you try to speed up. Can you get to full throttle by slowly advancing the throttle? <br /><br />If you are losing one of your cylinders, I would look at the coil output for that cyl.<br /><br />If I have my slow speed idle jets too lean, my motor will bogg down when trying to speed up. By choking(adding fuel) it will get to full speed. <br /><br />These engines are prone to bogg down. I had a 1980 Johnson 70 that I never fixed. Finally gave the motor to my brother. If you solve the problem you will have alot of happy Johnson/Evinrude 3 cyl. owners very happy.