1973 Evinrude 115 No Start has spark

Funhaver

Cadet
Joined
May 2, 2021
Messages
6
My 73 Evinrude 115 has been a project to say the least. I have researched this engine constantly and now I'm left scratching my head.

I started with no spark, I replaced the battery that was worn out, cleaned all grounds and replaced starter that was spinning slower than 250 rpms. Since then it reliably has spark.
Now I have gone through my entire fuel system. Replaced fuel lines, fuel pump, water separator, cleaned carbs twice.
I can not get this engine to run on its own for the life of me. It has 120lbs compression on every cylinder when I crank it for a while the spark plugs will have fuel on them and if I spray fuel directly into the carbs it will fire and run until it burns up the fuel I have sprayed in. I just got done looking for intake leaks before the carbs and have not found anything.
It's boating season down here in Florida and my wife is tired of watching me wrench on this boat every weekend.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,088
Remove one of the carburetor drain plugs.----Operate the manual fuel pump.----Does fuel leak out of that drain plug.------And did you clean the high speed jets that are screwed into the bottom of the carburetor bowls ?
 

Funhaver

Cadet
Joined
May 2, 2021
Messages
6
I appreciate the reply. I found the bowl gasket is deteriorating and putting pieces of rubber everywhere clogging everything up. A rebuild kit is ordered, I believe that will solve the issue. Not my proudest moment
 

Crosbyman

Vice Admiral
Joined
Nov 5, 2006
Messages
5,529
hey, if you get it going your wife will be happy and that will make you proud :) Happy wife... happy life
 

Funhaver

Cadet
Joined
May 2, 2021
Messages
6
It fired off 3 cylinders last night, just have to get some threads in the head repaired and we will be on the water this weekend, maybe she will stop threating buying a new boat :ROFLMAO::ROFLMAO: Thanks for the help guys
 
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