Carpfisher
Seaman Apprentice
- Joined
- Nov 25, 2012
- Messages
- 43
86 Johnson 6hp fires right up on a half a pull, no choke. But has no beans. Will not "rev up". Linkage seems correct. I can manually reach down to rev it and still nada.
Squeezing the primer ball doesn't help.
Disassembled the ultra clean carb. No debris or obstructions. Put a kit in it anyway. Hi speed jet that screws into the side of the side of the plastic pick up that sits on a gasket in the bottom of the float bowl is clear. New gasket and pick up tube replaced.
Motor has over 100psi compression and good spark, even though they are NGK's. I suppose this could be a really weird wrong plug problem but I dought it.
How about the timing advance setup on this motor? It seems to be mechanically activated rather than a spring loaded linkage set up like on my 70hp Johnson which was sticking and the spring was unable to overcome the stickiness, causing no power/no run problems and a confirmed fix !! So it doesn't appear that could be the problem but that is what I'm leaning towards, a timing advance problem.
This is the 6 with a lighting coil. I have the flywheel off now, but before I go digging in, I though I'd run it by the experts here. I don't see where there could be a problem since it's mechanical activation should overcome any "stickiness" that developed, tranfering the stickiness into a hard to turn throttle.
I have no manual, engine is not mine yet. Boat friend gave me 3 engines to try to get running. a 4 , a 6 and a 9.9.
4 and 9 are in bad shape. 6 can be mine for around 100 bucks if I can get it going plus it will be a great match for my 70 johnson. And the weight it right for the kicker bracket.
Otherwise it's 4 bills for a turnkey Tohatsu I see on CL.
Just trying to save a buck. I can buy a lot of fuel with that extra 300 bucks......
Squeezing the primer ball doesn't help.
Disassembled the ultra clean carb. No debris or obstructions. Put a kit in it anyway. Hi speed jet that screws into the side of the side of the plastic pick up that sits on a gasket in the bottom of the float bowl is clear. New gasket and pick up tube replaced.
Motor has over 100psi compression and good spark, even though they are NGK's. I suppose this could be a really weird wrong plug problem but I dought it.
How about the timing advance setup on this motor? It seems to be mechanically activated rather than a spring loaded linkage set up like on my 70hp Johnson which was sticking and the spring was unable to overcome the stickiness, causing no power/no run problems and a confirmed fix !! So it doesn't appear that could be the problem but that is what I'm leaning towards, a timing advance problem.
This is the 6 with a lighting coil. I have the flywheel off now, but before I go digging in, I though I'd run it by the experts here. I don't see where there could be a problem since it's mechanical activation should overcome any "stickiness" that developed, tranfering the stickiness into a hard to turn throttle.
I have no manual, engine is not mine yet. Boat friend gave me 3 engines to try to get running. a 4 , a 6 and a 9.9.
4 and 9 are in bad shape. 6 can be mine for around 100 bucks if I can get it going plus it will be a great match for my 70 johnson. And the weight it right for the kicker bracket.
Otherwise it's 4 bills for a turnkey Tohatsu I see on CL.
Just trying to save a buck. I can buy a lot of fuel with that extra 300 bucks......
