1985 johnson 15hp

[scrantny]

well...picked up the ole 15.... brought it home checked out a few things that i read about here and nothing seemed to do any good...cause it starts when its cold usually no problem at all....i will work on it and use it for another small boat i have....

so i drove across the river bought me a 25hp yammie elec start tiller.....whoo hoo...putting it in the water today to start the break-in period....

should be flyin shortly....

 

[Loggerhead Mike]

i bet its got a vacuum leak (ie bad crank seals)

congrats on the new motor i bet thats a great feeling!

 

[scrantny]

yes...its a great feeling...i took the boat out with the new motor and i am quite impressed on how much power it has....

now it was just me - the battery, 6gal gas, 12pk ice chest , life jacket and paddle...
not enough weight for full throttle.... but it will get it....i only had it at full throttle for a bout a minute or two per the break in instructions....but that baby flys....

i will check the crank case pressure to see what happens...should it stay pressured up or will it eventually fall....neighbor has massive tool set...im sure he can help....

 

[Loggerhead Mike]

yup.. im jelious

you'll have to make an adapter to go over the carb intake and plug up your fuel line. i'd draw 2 lbs vacuum and it should hold. its pretty time consuming but if you've checked everything else that would be next on my list. it may also lead you to a different bad gasket reeds ect ect. ask your buddy if he can do a compression test on it too before getting into the vacuum testing