Reply To: ‘79 Johnson 25 hp

[Geer Pyron]

Ha! That was funny. I really did think you were asking if I had a multimeter.
But hey!!! I think I found the culprit.
Fingers crossed, and maybe I shouldn’t say anything lest I jinx myself, but I’m confident.
I took the motor out this morning after re adjusting economizer link, going through the electrical stuff, and putting n brand new L78V plugs.
No change. Same problem.
But this time The Hank was with me and he insisted the motor was running to rich, like when you first put an old motor in the water and have to tweak that high speed needle before installing air box. It was just sluggish and I wished I had a high speed adjustment needle.
But alas, it is fixed jet in this motor.
But, since I skipped work today, I took the jet out of another 25 hp omc.
And compared them.
Noticibly different origice sizes.
I’m thinking some one had stuck the larger 35 hp hs jet in the smaller throated 25 hp carb in an attempt to convert it but didn’t take out the plastic air restrictor in the throat. More gas sure, but not more air.
I’m off to the lake!
G

JMGP