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1985 90 HP Johnson Idle problem

mb138

New member
"Stange as it sounds, when out

"Stange as it sounds, when out of the water and hooked up to muffs, motor idles great. When launched, the motor immediately fouls the upper 2 plugs and will not idle slow enough to put in gear."
 
"make sure,u r not using surfa

"make sure,u r not using surface gap plugs-inst ql77jc4-gap at .030....lower idle speed."
 
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