All, I'm new to the forum but looking for help keeping a Johnson 94 Ocean Runner 225 alive. I basically inherited it from my late father-in-law a couple of years ago. I believe age and neglected maintenance are catching up with it, and I've been struggling to keep it running reliably.
Right now I'm trying to set idle timing correctly. I have service manual, and last year I was able to do this correctly. This year I can't seem to be able to adjust the idle timing at all. It's kind of stuck between 0 and 2 degrees BTDC, and the idle, while often inconsistent, seems to stay in the 1100 to 1500 range. When I try to retard that with the adjustment screw, the timing mark doesn't really seem to move, although I might hear the motor hesitate briefly before resuming it's strong (and high) idle. At some point of trying to keep retarding the timing it will then just die, like I've pushed it too far. During all that time I never see the pointer mark really move though, and the idle speed never really drops until the motor actually just dies.
Is this a timer base or stator issue? Looking to narrow my troubleshooting a bit. Not being able to set a smooth, reasonable idle has made it difficult to troubleshoot and adjust other things, like carb mixture, QuickStart, etc. Boat runs pretty well above idle, although I sense she might be leaving some HP on the table due to timing, fuel mixture, or lync/sync not being 100% optimized (I have followed service manual for this process, but....well, I'm learning).
Some more info:
1. Recent compression test I did showed about 95 to 100 psi on all 6 (motor wasn't really hot at time).
2. Rebuilt carbs last summer, and I struggled to get the bowls and side plates to seal properly, as I think there is some warpage.
3. PowerPack was replaced with CDI unit two year ago (IIRC)
4. Plugs are new and gapped properly (should be correct plug)
5. Brand new VRO pump installed last week
6. Fuel and oil supply lines and primer bulbs are new
Thanks for any and all help.
rob
Right now I'm trying to set idle timing correctly. I have service manual, and last year I was able to do this correctly. This year I can't seem to be able to adjust the idle timing at all. It's kind of stuck between 0 and 2 degrees BTDC, and the idle, while often inconsistent, seems to stay in the 1100 to 1500 range. When I try to retard that with the adjustment screw, the timing mark doesn't really seem to move, although I might hear the motor hesitate briefly before resuming it's strong (and high) idle. At some point of trying to keep retarding the timing it will then just die, like I've pushed it too far. During all that time I never see the pointer mark really move though, and the idle speed never really drops until the motor actually just dies.
Is this a timer base or stator issue? Looking to narrow my troubleshooting a bit. Not being able to set a smooth, reasonable idle has made it difficult to troubleshoot and adjust other things, like carb mixture, QuickStart, etc. Boat runs pretty well above idle, although I sense she might be leaving some HP on the table due to timing, fuel mixture, or lync/sync not being 100% optimized (I have followed service manual for this process, but....well, I'm learning).
Some more info:
1. Recent compression test I did showed about 95 to 100 psi on all 6 (motor wasn't really hot at time).
2. Rebuilt carbs last summer, and I struggled to get the bowls and side plates to seal properly, as I think there is some warpage.
3. PowerPack was replaced with CDI unit two year ago (IIRC)
4. Plugs are new and gapped properly (should be correct plug)
5. Brand new VRO pump installed last week
6. Fuel and oil supply lines and primer bulbs are new
Thanks for any and all help.
rob
