tightline Posted February 24, 2010 Report Share Posted February 24, 2010 Hey all not sure if this is the right forum but hell gonna post it anyway...I need a motor for my 14 ft tinny,,,currently it has an old 62 seahorse 28hp on her, but she was really giving me some probs at the end of last year...The problem is it keeps jumping so to speak...starts like a dream but once it engages in gear it will jump and under throttle it happens periodically...like every 10-15 secs...so first off anyone have an idea what this may be, and if so does it make for an easy fix, or am I better off getting a new one and scrap the old girl...If anyone has an answer to this prob or knows where a fella can pick up a used one cheap I'd like to get a 15-25hp nothing special...Figured this worked so well for Solo and his lures I might as well give it a try...so anyone with the answer to my prob or a line on a decent motor please help!! Thanks all Link to comment Share on other sites More sharing options...
HTHM Posted February 24, 2010 Report Share Posted February 24, 2010 Check for a hole in your fuel system, it sounds like a fuel problem. I was at Pices marine in Oakville yesterday, and they have some 25 - 30 hp tillers for sale there. Not sure of the pricing though.... Link to comment Share on other sites More sharing options...
DRIFTER_016 Posted February 24, 2010 Report Share Posted February 24, 2010 Once you have checked the fuel system look at the ignition system, could be a bad plug, plug wire, coil etc. Link to comment Share on other sites More sharing options...
cheaptackle Posted February 24, 2010 Report Share Posted February 24, 2010 Are you saying it's jumping out of gear or shutting down & suddenly returning to full power? Michael Link to comment Share on other sites More sharing options...
ssminnow Posted February 24, 2010 Report Share Posted February 24, 2010 Sounds like it may be the coils. I had this problem with my old Johnson kicker. I would describe it as surging but jumping might describe it as well. Link to comment Share on other sites More sharing options...
tightline Posted February 24, 2010 Author Report Share Posted February 24, 2010 (edited) I would describe it as lets say missing teeth on a gear, where it feels like a millisecond stallout and then re-engage...like when your car is running out of gas...but it happens very fast...the funny part is sometimes it does it sometimes it won't and the length of the occurrences is different...a gas problem would be a blessing, that I can fix...I've tried adjusting the tranny? cable, but nothing seems to work...a friend of mine had a similar problem and a small adjustment to the cable was all it took but this doesn't seem to be the case for me...for the record on the ignition note my boat key did stop working to turn off the boat on a trip to the moon, checked wires and tested current flow all seems ok, but will still not turn off motor...will start motor though...strange Edited February 24, 2010 by tightline Link to comment Share on other sites More sharing options...
DRIFTER_016 Posted February 24, 2010 Report Share Posted February 24, 2010 Sounds like it may be the coils. I had this problem with my old Johnson kicker. I would describe it as surging but jumping might describe it as well. That's what I'm thinking too. Had the same issue with my first outboard a 1963 Johnson 5 1/2. Link to comment Share on other sites More sharing options...
cheaptackle Posted February 24, 2010 Report Share Posted February 24, 2010 Yeah - gotta go with coils too. Had the same with a 1985 30 hp Evinrude. Coils were the culprit. That 28 hp you have is probably a commercial workhorse - worth checking into if the compression is still good. As I recall, my coils weren't bank breaking replacements, certainly were easy enough (minutes as I recall). If it were jumping out of gear - you'd be in a momentary over rev then sudden down rev when re-engaging. Wouldn't be in the least bit surprised if they were readily available (couple days). Haven't got the link for it but try googling BRP parts - you may be able to access the catalogs & look it up yourself. I did that last year for a 1995 115 hp Johnson. Michael Link to comment Share on other sites More sharing options...
tightline Posted February 24, 2010 Author Report Share Posted February 24, 2010 Cool gonna check out that site Cheapskate...thanks all will let you know Link to comment Share on other sites More sharing options...
cheaptackle Posted February 24, 2010 Report Share Posted February 24, 2010 (edited) Cheapskate??????????????? And here I thought we were gonna be friends after the Solopaddler episode! Michael Edited February 24, 2010 by cheaptackle Link to comment Share on other sites More sharing options...
tightline Posted February 24, 2010 Author Report Share Posted February 24, 2010 Cheapskate??????????????? And here I thought we were gonna be friends after the Solopaddler episode! Michael LMAO!!!!!!!!! I am sooooooooooo sorry Was not thinking just typing...HAHAHAAAAA my bad Link to comment Share on other sites More sharing options...
cheaptackle Posted February 24, 2010 Report Share Posted February 24, 2010 That's better. When you get to know me better you'll find out how much I earned being called that! But keep it a secret willya? Got a reputation to uphold! Michael Link to comment Share on other sites More sharing options...
HTHM Posted February 24, 2010 Report Share Posted February 24, 2010 A very good resource on the board is Boatman. He has an incredible knowledge of old outboards. Send him a PM and he can advise you. Heck he may even have the parts you need. Link to comment Share on other sites More sharing options...
Radnine Posted February 24, 2010 Report Share Posted February 24, 2010 If you go used what about Port Coburn Marine? They get all the leased engines back from outfitters etc. They were at the fishing show and the deals looked to be quite good I thought. Jim Link to comment Share on other sites More sharing options...
Weeds Posted February 25, 2010 Report Share Posted February 25, 2010 I don't know anything about motors but what your describing sounds the same as a problem I had. Worn Clutch dog, or Dog Clutch, can never remember which. Google it. Kind of a bigger problem; supposedly you can reverse them. I ended up selling mine to somebody confident that they could fix it. Link to comment Share on other sites More sharing options...
Spiel Posted February 25, 2010 Report Share Posted February 25, 2010 I had a 1976, 25 horse Johnson that had similar issues, first time it was power related, changed a coil and I was good to go. A few years later it was jumping in and out of gear, that was the clutch dog. Both are fairly easy fixes. Link to comment Share on other sites More sharing options...
boatman Posted February 27, 2010 Report Share Posted February 27, 2010 First let me say, thank you for keeping the old girl running. They are good motors and very reliable when properly serviced. The 1962-64 28 hp is actually a re-issue of the 1955 OMC 25hp, which evolved into the 40 hp of the 1960-70's. Its a big displacement motor. You can literally move mountains with her. On to your question, I'm not sure by your description if you are having trouble with your engine or gearcase. A failing clutch dog (gearcase issue) usually pops out of gear and back in very quickly. Normally the engine revs high when it pops out and then dog slams back into gear with a bang. Usually only happens under load. Easy fix, but can be expensive if the gears are damaged at the mating surface. Sometimes you can get away with flipping the dog over. However, that is a short term fix. If its engine related then the first thing to look at is the coils. Your motor has the old "universal ignition" that was used on most models from 1952 to the mid 1970's and even into the 1990's on the smallest outboards. Coils will run about $26/ea aftermarket or $36/ea at the dealer. Take off the recoil and remove the inspection window from the top of the flywheel (if it has one) and look at the coils. If they are cracked, sweaty or discoloured they need to be replaced (see attachement). The old coils have a 100% failure rate even if they appear to spark well. The "stalling" suggests to me that th engine is "coughing" or losing spark. You may consider replacing the entire ignition (coils, points, condensers, wires and plugs) if that's the case. Your motor is almost 50 years old and deserves a little attention after so many years of good service. A complete new ignition will run about $100-120. I doubt the problem is fuel related only because it is so intermittent. PM me your email address and I'll send you some service literature. Link to comment Share on other sites More sharing options...
fisherman7 Posted February 27, 2010 Report Share Posted February 27, 2010 If you're looking for good, newer used outboards, check Port Colborne Marine or Hastings Marine. I've dealt with them both and they are excellent. Link to comment Share on other sites More sharing options...
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