View Full Version : 30 liter merc wont idle

05-04-2006, 08:42 PM
any one have any ideas ran great last week now it will not stay running THANKS

05-06-2006, 11:31 AM
"check for water in your fuel. If you live in Va. you may have some ethanol fuel related problems. water again, but with the etanol it can cause a substantial drop in octane."

05-11-2006, 11:57 PM
Your idle in gear should be 650-700 when in forward gear.Shut engine off.Take off your throttle cable. Start engine. Shift into forward gear. Now adjust idle screw near throttle until yor rpm is 650-700.. shut engine off.Shift into netural and put cable back on might need to adjust barrel on throttle if your idle speed was out now start engine and see if idle is good might need to adjust mixture screw as well.