starting problem with 25HP Johnson

D

dfrants

Petty Officer 1st Class
Joined
Jul 26, 2008
Messages
368
just got a 1995 25hp johnson. won't start unless you spray starting fluid into carb, once you get it running and warm it up, i can shut it off and start it up right away. but if you leave it sit for a few minutes and cool down, it won't start again. also if you try to prime it, it seems to flood and soak the spark plugs. I checked the compression and it is an even 125psi and spark is good. what is the factory carb rich/lean setting?
can these style primer solenoids cause starting issues?
thanks, Don
 
B

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: starting problem with 25HP Johnson

How did you check your spark ??
 
ilovevintage81

ilovevintage81

Banned
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Apr 28, 2013
Messages
186
Re: starting problem with 25HP Johnson

I had a 140 mariner that did the same thing and the guy that did the work on it said it was cold natured but i think it has something to do with the feul we never did figure it out but i wouldnt keep spraying alot of starter fluid in it i hear bad things about it
 
D

DJ Grimes

Cadet
Joined
May 10, 2013
Messages
8
Re: starting problem with 25HP Johnson

BE AWARE
Starting fluid in a 2 stroke is a bad idea due to the no existing lubrictaion
Too much starting fluid drys the cylinder walls which will lead to seized engine
trying choking it for a second then turning it without choke if still wet plugs looks like its time to break out the electric tape an find out why its not firing
two strokes are just like wives
give them what they want theyll love you forever
give them something they dont want itll cost ya
 
D

dfrants

Petty Officer 1st Class
Joined
Jul 26, 2008
Messages
368
Re: starting problem with 25HP Johnson

i have an inline spark tester. it showed a bright spark on both cylinders.
 
B

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: starting problem with 25HP Johnson

Will it jump a 7/16 " open air gap ??
 
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