99 Yamaha 25 two strok oil injection test

av8erdunn

Seaman Apprentice
Joined
Oct 8, 2014
Messages
43
I have a 25 two stroke that I want to test the oil injection on. Does anyone have the test procedure from the factory?
I have rebuilt the oil system putting new lines and check valves in place. Cleaned the gears, tank and reassembled. I just bought this motor so I want to be sure the oil injection is operating correctly prior running without the premix.
Thanks in advance
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
8,851
easiest way if mark the level in tank,
run premix and see if the level drops after running a know amount of fuel.
measure how much oil it takes to get it back to the marked level.
do some math

Service manual should have the test and specs for oil test.
So many cc s of oil used in a certain amount of time at a certain RPM while running on premix
 

av8erdunn

Seaman Apprentice
Joined
Oct 8, 2014
Messages
43
Thanks for the reply. I ended up just taking the oil injection off today. Easier for me to just mix it than worry about it not working.
 
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