70 HP Envinrude Carb problem

C

Camdenite

Recruit
Joined
Jun 8, 2008
Messages
2
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.

:confused:
 
tashasdaddy

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: 70 HP Envinrude Carb problem

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

Camdenite

Recruit
Joined
Jun 8, 2008
Messages
2
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.
 
W

wahoo 16

Cadet
Joined
May 30, 2008
Messages
28
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.
 
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