115 Yamaha Idle/Acceleration Problem

[Noodler]

1989 Yamaha 115 HP/ model 115ETLF Hard start, poor idle, dies upon acceleration. Then runs like a top above <br />1500 rpm to WOT. Ran fine last summer,was winterized, has fresh fuel,always have used fuel stabilizer, fresh NGK B8HS-10 Plugs,fresh oil,Plugs are not wet<br />Have good spark at all plugs, will rev up fine when not in gear,however, under load hesitates or stalls, not smoking any more than normal, what do I need to check for this problem? Thanks

 

[tscott]

Re: 115 Yamaha Idle/Acceleration Problem

I had a similar problem with my '91 evinrude 200. Turned out to be a plugged fuel filter. Might start there and one of the more knowledgeable people will probably be along shortly to help you further.

 

[maryhislop]

Re: 115 Yamaha Idle/Acceleration Problem

I am having the very same problem with my Yahama 70. We did clean out the fuel filter. It was plugged with sticky rubber from an old fuel line. Now that it is clean, what else should I try? Should I take the carborator off and clean it? At times, it runs perfectly. We have replaced the hose also. Are there any lines in the motor that would need cleaning?

 

[Noodler]

Re: 115 Yamaha Idle/Acceleration Problem

Thanks, I have replaced the fuel filter,checked the lines,Primer bulb is ok,any other tips?<br />what is involved in cleaning the carbs? Is this the same as a rebuild?