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  1. J

    Compression test result question

    Ok so I ran a compression test today with a borrowed gauge and it wasn't a screw in you had to hold a rubber boot in the plug hole. Also I dont know if it matters but it was also missing the glass. Anyway the results where 65psi on both cylinders on my 1985 40hp Johnson. This seems a little low...
  2. J

    Where is the high speed needle?

    Can someone point out where the high speed needle is so I can check to make sure they are not plugged while ive got it tore apart to replace the fuel lines.
  3. J

    Fuel Problems? 1985 40hp Johnson

    OK the problem is the engine surges at WOT. No problems at idle or any other speed until I reach almost full throttle. Also it doesn't do it all the time. I have had the carbs cleaned and rebuilt gas tank fuel line and fuel filter have all been replaced. My next step is the fuel pump. It is...
  4. J

    HP Rating?

    I was browsing ebay the other day looking at parts and such and I found an auction for a set of carbs for my engine. The guy stated that the only difference in HP for these engines was the carbs. This just didn't make sense to me I thought there would be a displacement difference. But if this is...
  5. J

    Fuel problems? 88 40hp Johnson

    Ok so I took the boat out for one last weekend on table rock and a weird problem popped up. First of all the carbs where just rebuilt at the shop so I don't think they are the issue also the fuel line was replaced as well with an attwood replacement. Now the problem is the motor surges but not...
  6. J

    Prop Advice?

    OK so here is the problem. Weak hole shot at full payload! The boat has a good hole shot but add 275lbs and it takes 30 seconds or so to get on plane also the boat doesn't like to stay on plane if let off the throttle at all. Details Don't know prop manufacturer but I think it is the original...
  7. J

    Trouble going into gear at low speed? PLEASE HELP!

    Ok I got my boat to the lake yesterday and the engine is running fine, but I was having trouble getting it to go into gear at low throttle. It would do just fine in reverse and if I gunned it to run across the lake but I had issues when in a no wake area. It is a 1987 Ozark with a 1988 40hp...
  8. J

    Proper gas/oil ratio? Also gear ratio on this motor?

    I have a 2 cylinder 2 stroke 1988 40hp Johnson. I am thinking it should be 50:1 but not sure my dad whose boat this was before passing was told 80:1 buy a mechanic when he had to bypass the automatic oiler when it quit. And does anybody know the gear ratio on this motor? Also what would be...
  9. J

    I had milky oil in the lower today when I changed the oil?

    OK first post here sorry if I do something wrong: The boat is an 87 Ozark if that matters Motor is a 88 40hp Johnson The boat did not run last year due to carb issues which I just got it back from having them rebuilt. he boat was my dads who passed away back in February so I got the boat but I...
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