Dear friends,this motor was stored for about 3 years, wouldnt idle on its own w/o holding primer - carb jets were plugged with oil gum - green gum. Anyway, got the OEM Johnson carb kits & floats - did carb rebuild on all carbs - noticed when taking apart 1) the carbs that the floats were really set low - IE were really recessed into the bowl when holding upside down. My manual said the floats were to be level with the bowl gasket mating surface - did that, reassembled 2) Manual said idle screw was to be set @ 3 1/2 turns - these were set at 4 1/2 - 5 turns. Set to manual specs - would hardly run. Opened up from 3 1/2 - to somewhere near 5 turns motor ran on its own but rough. Did not link & sync, nor checked TDC. Can't tell if motor is running rich OR misfiring - it will idle but when I tip into the throttle - it stumbles - popps & sneezes out the exhaust, occasionally it really picks up & I have revved it to 4500. Seems to me its misfiring - on the other hand seems also to be rich - plugs fouling - bt could this be loading up from a misfire ?. The only way the carbs would be rich is if the float level was incorrect - which appeard to be the problem initially - but I I corrected that ..Could it ne an erratic powerpack - how to test ? - scope ? Anu ideas would be appreciated - thanks ! PS - I made sure every passage was clear in the carbs - used OMC power Tune to soak them clean & used compressed air to blow out passages. Intermediate jets are #30, High Speed Jets are #70D.
J130TLEDM
J130TLEDM
