1979 Mercury 115 just stopped and wont fire

bazzmaster

Cadet
Joined
Mar 6, 2005
Messages
19
I ran it a couple hours the other day then while at idle speed it just died.. Now it won't fire.. cranks good and has fresh gas.. Has never ran bad, ever. Always fires right up and runs strong.. All of a sudden it just wont start.. I need help!!
 

cell

Petty Officer 1st Class
Joined
Apr 16, 2009
Messages
208
Re: 1979 Mercury 115 just stopped and wont fire

Is there a spark?Check all plug wires with a timing gun for spark.
 

bazzmaster

Cadet
Joined
Mar 6, 2005
Messages
19
Re: 1979 Mercury 115 just stopped and wont fire

I wont have time til Sunday.. what if I do and dont have spark.. I wont have internet where i will be... thanks in advance
 

cell

Petty Officer 1st Class
Joined
Apr 16, 2009
Messages
208
Re: 1979 Mercury 115 just stopped and wont fire

Check the fuel system...spray some fuel mix in the carb throats and see if it fires.If it does Id say you found your problem.
Check for visible signs of roten wires,grounds,ect.
heres a wire diagram for your year:
http://www.maxrules.com/oldmercs/Wiring/1966ona/38.jpg

Thats all I can give unfortunately.My merc has a different system on it.
 

rosser1

Petty Officer 1st Class
Joined
Apr 5, 2009
Messages
360
Re: 1979 Mercury 115 just stopped and wont fire

also check to see if batteries are charged, a low battery can mean no spark, motor not turning fast enough, check for lose connection anywhere.
 
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