79 johnson squeek and caugh

[hornytoad]

i have a 79 johnson 35 hp model 35EL79A it starts and idles fine but when i go mid throttle it coughs every other minute and at WOT it makes a squeak every 30 seconds that last about half a second like a mouse any advice would be appreciated

 

[Monte1961]

Re: 79 johnson squeek and caugh

you are describing a lean sneeze or cough. When was the last carb overhaul? Don't know? Been more than a year? Overhaul carb/s with OEM kit/s. post back your results.

 

[larryg]

Re: 79 johnson squeek and caugh

make sure the low idle adjust is a turn and 1/4 out from light seat.sounds like its runnin lean.

 

[hornytoad]

Re: 79 johnson squeek and caugh

make sure the low idle adjust is a turn and 1/4 out from light seat.sounds like its runnin lean.

ill try this one first for obvious "cheaper"reasons.if that dont work ill overhaul carbs. thanks monte1961 and larryg your help is verry much appreciated!!

 

[hornytoad]

Re: 79 johnson squeek and caugh

make sure the low idle adjust is a turn and 1/4 out from light seat.sounds like its runnin lean.

on my motor it has a black plastic box on the front of the carb that has a knob and two arrows one to the left to lean and one to the right to rich. is this the low idle adjust ? if so how much should i turn it and should i be on the water and at what trottle

 

[nwcove]

Re: 79 johnson squeek and caugh

turn the knob to the rich side! add more oil to your fuel! give it as much rich fuel as it will take without bogging down, rich fouls plugs, lean kills engines. if going hard to the rich side at the throttle settings you were describing the problem at, doesnt seem to make a difference, go easy...slow down , take your motor home, and rebuild the carb! tons of excellent info here on the procedure....the right way!