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  1. BonairII

    Why is my Johnson 80hp hard to restart ? (Updated)

    The motor starts easily and runs very well. It idles smoothly and will remain idling well even when RPMs are very low. Points, condenser, plugs, and coil are new. The problem is that it's hard to restart after I stop the motor to fish etc. Sometimes it starts right up, but dies after about 5...
  2. BonairII

    Lower Units that are compatible with my '67 Johnson 80hp?

    I'm always on the lookout for motors and parts. Anyone know what years and hp LUs are compatible with my 1967 Johnson 80hp ?
  3. BonairII

    Is this "brand new" OEM Johnson coil still good?

    I'm thinking about picking up this "brand new" OEM coil for my Johnson 80hp. http://www.ebay.com/itm/190565793308?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649#ht_500wt_922 Is this coil likely still good? Or can they simply 'go bad' after sitting for so long?
  4. BonairII

    A/C Delco spark plugs okay for Johnson 80hp ?

    I'm currently using A/C Delco R43S plugs on my '67 Johnson 80hp motor. I couldn't find Champion J4J or J4Cs locally. NAPA says that the A/C Delcos were the same as the Champions, but I'm having doubts. I read a thread where it was stated the plugs with the letter "R" in them meant resistor...
  5. BonairII

    Started the decarb on my 1967 Johnson 80hp tonight (see video)

    After doing a ton of reading on the many different decarb procedures...I decided that I wasn't going to wait any longer. (Talked to PO and he had never done a decarb on it) Warmed up the motor this morning then pulled the plugs and heavily sprayed each cylinder(at TDC) and let the motor sit...
  6. BonairII

    Is this decarb procedure ok for my Johnson 80hp?

    Now that my motor is running on all cylinders, I think it's about time that I decarb it. I've been reading tons of threads on the subject, but want to be sure that how I plan to decarb it...is acceptable. Going to warm the motor up on muffs. Then I'm going to mix up a gallon of premix and 3/4...
  7. BonairII

    Is this fuel contaminated? (see pic)

    I emptied out my bow mounted fuel tank last week(had 18 month old stabil treated fuel in it). I looked in the tank with a flashlight and didn't notice any rust etc(but I can't see too far left and right of the opening). I replaced the fuel line and installed a clear fuel filter like this one...
  8. BonairII

    1967 Johnson 80hp backfires when I mist fuel into carb

    My #2 and #4 cylinders are still giving me problems. Motor starts right up(on only 2 cyls, I think). I pull the #2 plug wire and engine doesn't stumble....same for #4. I sprayed premix in the starboard carb throat(this carb feeds #2 and #4 cyls on the port bank) and the motor backfires(a loud...
  9. BonairII

    Need help to set points on Johnson 80hp (Manual is confusing)

    I've been reading my service manual on how to set points, and I'm not sure I set them correctly In the "d" section of instructions it mentions "The breaker point arm opposite the condenser should be on the high lobe of the cam" It then immediately explains in section "e" to loosen the...
  10. BonairII

    Torque specs and tightening pattern for 1967 Johnson 80hp?

    I asked this question in my "stripped spark plug hole" thread, but it turned into a "Time Sert" discussion. My head gaskets are arriving tomorrow(ahead of my service manual). Anyone know the pattern I should tighten the bolts? And to what torque?
  11. BonairII

    How to test coil and condenser on 1967 Johnson 80hp

    I finally ordered a service manual for my motor, but it won't arrive til Monday or Tuesday. I'd like to get some testing done on my coil and condenser in the meantime. Going to pick up an auto-ranging multi meter tomorrow (shame on me for not having one already) I'm an electrical noob, so...
  12. BonairII

    Stripped spark plug hole.....Helicoil or swap head?

    While checking plugs I noticed that my #1 cylinder spark plug hole is stripped. :mad: I def didn't do it...I'm guessing that the previous owner probably cross threaded it and weakened the threads, since there is another helicoil installed on the #4 cylinder. Anyone know how difficult it is to...
  13. BonairII

    '67 Johnson 80hp. Dropped 2 cylinders.....AGAIN!

    Guess I should start a new thread cause my motor isn't bogging anymore, now I can't seem to keep the port side cylinders running. Quick overview: Compression is 90psi across the board Starboard cylinders are running fine (I pulled plugs one at a time and engine stumbles/dies) Port side...
  14. BonairII

    Johnson 80-85hp owner's.....What speed you getting out of your motor?

    Before I even bother trying to get more speed out of my '67 Johnson 80hp motor, I need to know approx what speed this motor is capable of. My 15' Glasspar weighs 675lbs, motor 240lbs, gear/fuel/me 310-ish lbs.....and I'm getting a max speed of 33mph w/ stock prop. If this is normal, I'm fine...
  15. BonairII

    Water intrusion in Johnson 80hp LU...What parts do I need to replace?

    When I dropped the LU on my '67 Johnson 80hp, I noticed a lot of gear oil slime on the outside of the water pump housing etc. What seal is most likely the cause of this? I've changed the LU oil twice, so this is an ongoing leak.
  16. BonairII

    80hp Johnson now BOGS at WOT!

    Went to run the boat today. It was "lean sneezing" for some reason the other day, now it's bogging. I'm at a loss as to what the prob is now. All 4 cylinders are now firing, so that's not the prob. I took off the carbs and cleaned them again just to be sure no gunk clogged it up. Found...
  17. BonairII

    Broke steering clamp!! Need help fast!

    I could kill myself right now... I turned my wheel too hard while trying to dock and broke the clamp that holds the line(under the dash). Can I rig up some repair? Possibly clamp it or something? Can I buy the broken piece or am I stuck buying a whole new steering system?
  18. BonairII

    Fair price for 1967 Johnson Electric Shift parts?

    I've got a spare 1967 Johnson 80hp Electramatic that I'm using for parts for my '67 manual shift Johnson. I'm assuming that the lower units aren't interchangeable, so I'm going to part-out any parts I can't use. Anyone know what parts AREN'T compatible with my manual shift? I've got the...
  19. BonairII

    Need help wiring 1967 Johnson 80hp electric shift (See Pics!)

    Just picked up a 1967 Johnson electric shift today. I thought it was a manual shift, but after a 2 hour drive...I was taking the motor home regardless. Bought it for $175 (included controls and ignition console). PO was selling it because his kid burnt out the starter and he didn't want to be...
  20. BonairII

    How long is Stabil-treated fuel "good"?

    I just removed the bow mounted 12 gallon(I'm guessing) fuel tank from my boat to inspect/service it. First question....The tank contains about 8 gallons of stabil treated gas, how long is it considered "good"? Second: If I end up having to empty the tank of the gas(and I see sediment etc on...
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