runs great at WOT.not at idle

Joined
Jun 14, 2005
Messages
26
1977 johnson 115 outboard...<br />recently rebuilt<br />compression good across all chambers<br />rebbuilt carbs<br /><br />question:<br />IF i can get it in gear without it dying, it runs awesome. if i come down to idle it instantly dies.starts back up..put it in gear it dies...starts back up....etc...<br />what other options can i look at? maybe tear the carbs down again?<br />on my motor what is the optimum gas/oil ratio?<br />book says 24:1<br />doesn't smoke at WOT, only a little at first start upthen there after it dies, upon starting it smokes...then clears up.<br />i have new impeller,clean oil in my foot (yes i had leaky seals, fixed them today)<br />any ideas....<br />i'm holding off on a mechanic cause 55$ an hour i'd like to spend on gas & oil....<br /><br />after thought.....would a missing thermostat cause this?<br />and is it normal for a 2 cycle to have oil puddles under the carbs ?<br />i don't know, i'm only used to cars in that area
 

Solittle

Fleet Admiral
Joined
Apr 28, 2002
Messages
7,518
Re: runs great at WOT.not at idle

Yes on the thermostat.<br /><br />Double check on the 24:1 - for the 1977.<br /><br />Did you soak the carbs overnight & blow out with high pressure compressed air as in from an air compressor?
 
Joined
Jun 14, 2005
Messages
26
Re: runs great at WOT.not at idle

quote from book:<br />FUEL MIXTURE<br />1 part lubricant to 50 parts gasoline OR<br /><br />6 gallons(22.7 litres)tank 1 pint(.47litres) lubricant to 6 gallons of gas<br /><br />24:1 was wrong. glad you had me check that.<br />as for compressed air i have a feeling the intermediate jets are my problem. as i only soaked those, but i didn't blow them out. i'm a newbie so please have patience with me i have to buy new rebuild kit for carbs..they have those core plugs unless i can buy JUST core plugs....<br />the book calls for type "M" omc adhesive on the core plugs...<br />i can't find type "M" whats the current to date replacement?
 

Warty

Recruit
Joined
May 17, 2005
Messages
2
Re: runs great at WOT.not at idle

archangel,<br />I have the same motor that you have and it sounds like you are describing mine! When you figure out the reason your motor is doing this, please post what it was...I am at my wits end trying to figure this out. Thanks!
 
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