Merc won't go !

b9303

Seaman Apprentice
Joined
May 25, 2011
Messages
37
Have just gotten back to working on my 1986 90 hp Mercury outboard motor.
Not started for 3 years. Have good, equal compression on all 6 cylinders.
Got spark on 4 plugs, can't get at the other two.Gas dripping out of 3 rebuilt carbs.
If it's got compression, spark and gas, and it's cranking, why don't it go ???
I didn't hook the gas up this time but the gas was dripping from the carb throats, i doubt it is 3 stuck floats. You don't think i could have put a gasket in upside down ? But If the gas is in the bowl, the only ways out that i know is the needle valve or out the front.
I forgot to pull a plug or two to see if they were wet, have to do that before taking the carbs back off tomorrow. Also no tilt, just clicks at solenoid. Took blue wire off solenoid and jumped to battery, tapped on tilt motor to free up possible stuck brushes, nothing. Thought to ask you guys before screwing something up !
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,562
Re: Merc won't go !

Sometimes the floats will stick after a layup. Give it a day to unstick, before you tear the carbs open. Which cylinders do not have spark? Triggers control spark to two cylinders, switchboxes control spark to three cylinders.

Are you choking the crap out of her? After you get spark to all cylinders, hook up the muffs and choke the crap out of it.
 

b9303

Seaman Apprentice
Joined
May 25, 2011
Messages
37
Re: Merc won't go !

Thank you, supposed to have rain for two days but i'm going to try again asap.
 

b9303

Seaman Apprentice
Joined
May 25, 2011
Messages
37
Re: Merc won't go !

Got motor running ! Won't shut off, have to disconnect gas line. Going to post new thread for help with this.
 

b9303

Seaman Apprentice
Joined
May 25, 2011
Messages
37
Re: Merc won't go !

Fixed it, runs and shuts off. Thanks guys.
 
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