70 HP Envinrude Carb problem

[Camdenite]

Hello All, I am a new member here. Well I have a 85 or 86 70HP Evinrude that gives me problems after idling. Seems the carbs load up and when giving some throttle, the motor does not respond when advancing the throttle. I return to neutral, use the choke lever to run up some RPM's, seems to clear the carbs, and the motor runs fine. It's every time after letting the motor idle for any length of time.

What do you think this problem can be? I am puzzled.

 

[tashasdaddy]

Re: 70 HP Envinrude Carb problem

probably dirty carbs, also have you checked spark on all 3 cylinders?

 

[Camdenite]

Re: 70 HP Envinrude Carb problem

The carbs are clean and all three spark plugs is working fine. It idles great and once going, it runs great. It will sit and idle smooth for a long time. Just can't get the full power after until I clear out the engine.

 

[wahoo 16]

Re: 70 HP Envinrude Carb problem

any major engine work lately? look back at my posts, 86 carbs have non adjustable intermediate fuel circuit. make sure the intermediate passages are clean. we ended up drilling my carbs to let more fuel in at the intermediate stage. do not know about 1985.