Ok I’ve laid the Johnson to the side for right now, before I get aggravated and lose interest all together. In earlier posts I’d mentioned that I have 8 or 9 engines total. (A mariner 30hp on my boat now , that runs perfect) anyway it seems every compression check I do is 50 lbs (give or take a few) I have a 5 hp Scott Atwater that I thought I’d look at. Out of all the ones that have read “low compression- 50 lbs, this one is the worst at about 30lbs top and bottom. But when I pulled this one before checking I assumed it was gonna be low , not a lot of resistance at all — noticeable. So I decided for the experience I’d start complete disassembly . There are no noticeable grooves in the cylinder wall or on piston . Doesn’t appear to have standard reed valves that I can see. The opposite side from reed valve (combustion chamber? Is really dirty /oily. Any way maybe new rings would restore compression on this one?? I’m trying to enclose some pics . I really really wanna get one of these engines actually usable type running in order to make this hobby enjoyable lol
It's a jungle out there.
