Recent content by JasonB

  1. J

    Plug wires for ‘71 Merc 20hp

    Correction, it does look like 18-5227 and 18-5228 cross reference to the original wire kit 84-813715A1.
  2. J

    Plug wires for ‘71 Merc 20hp

    I found a reference that sierra 18-5227-1 would work, but can’t find a solid chart that shows it. In looking at them, they have nuns that look like they might be designed to fit both, just hoping to verify before I order. I see Sierra makes a kit that has all the parts to make 6 of them, I was...
  3. J

    Stripped drain plug

    That’s my immediate plan until I maybe work out something for the original.
  4. J

    Stripped drain plug

    Just picked up an old Richline 15 Aluminum boat that has a ~1” dia screw in drain plug. Unfortunately, the threads are mostly stripped. I can come up with some ready ways to plug it, but any advice on how to fix it back to something like original?
  5. J

    Plug wires for ‘71 Merc 20hp

    Picked up an old ‘71 20hp to play with and found a broken plug wire. I patched it together enough to verify it will run, but will regular merc 7” and 9” plug wires for older models work? The coil side of these look like a U shaped electrode soldered as a cap over the wire.
  6. J

    OMS help needed

    At this point, I'm totally confused. Went out today, hooked up the vro tank and my pre-mix tank, opened the cap on the oil tank and started it. Got tons of smoke beyond what I saw yesterday. Unhooked the oil line, put my clear tube on, and started it. At first it pushed oil 3ish inches back...
  7. J

    OMS help needed

    I don't hear anything like that at shutdown, nor do I hear a click every 30-45 seconds, though there is sometimes one 30-45 seconds after shutdown. Is it possible to check the bearings without tearing it down?
  8. J

    OMS help needed

    Also, it looks like rebuild kits are still available, 2 part numbers needed. Ate both needed and I assume they contain the diaphram you mentioned?
  9. J

    OMS help needed

    My understanding is/was the VRO changed to OMS around '93, maybe this model didnt. Agree on the alarm. I checked and I get a regular alarm check when I turn the key on. I'll try it with the oil tank open, but would that be similar to the open ended tube?
  10. J

    OMS help needed

    Compression test engine warm, shut off ~30 minutes ago, heads about 110-115deg, all plugs out, cranking for 2x 3 second bursts with the starter per cylinder. This was with my 15+ year old Harbor Freight gauge, so... 121, 122, 120, 118 so compression at least looks equal. I did notice 3-4" of...
  11. J

    OMS help needed

    1994 Johnson 120 TLERC Noticed my engine seemed to be clicking loudly at idle on the water and I think shook a bit more at low rpm than normal and maybe a bit sluggish. I never got an alarm. Brought in home and started it on the hose, noticed no smoke, and shut it down.Began reading that the...
  12. J

    '94 Johnson 120 hard miss

    Interesting side note that probably means nothing. Noticed that the new power pack doesn't have the brass spacers in the bolt holes that the original had. When I put the ground wire on, I put it under the same nut and im not convinced it tightens against the housing. I would assume there is...
  13. J

    '94 Johnson 120 hard miss

    VRO is still on it. Most places I look list the QL78YC for this motor, including BRP parts, but just noticed the Clymer I have on the shelf lists the QL77JC4.
  14. J

    '94 Johnson 120 hard miss

    Currently has a set of QL78YC's with maybe 5 hours on them. I installed new plugs with the first power pack.
  15. J

    '94 Johnson 120 hard miss

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