Recent content by 68glasspar7870

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  1. 6

    1978 Johnson 70hp being a bi**h

    Also, does anyone know what the fuel pressure is supposed to be? My fuel pump seems to be leaking a little gas and loosing prime. I would like to switch to an electronic fuel pump. I’m just not sure what size I would need.
  2. 6

    1978 Johnson 70hp being a bi**h

    Anyone know where to find a used/cheap prop? This boat is a money pit, and I would like to save some money. Also, now that I know exactly what those screws do, i will have someone drive the boat while I adjust the timing. It runs pretty good right now, but I'm not trying to break it just yet.
  3. 6

    1978 Johnson 70hp being a bi**h

    I do not have any electronic adjustments such as tilt or trim. Pics of the prop are attached below.
  4. 6

    1978 Johnson 70hp being a bi**h

    That numbers on the prop read “13 3/4 x 15” and the number, which I assume is a part number, looks to be 391198. The prop has seen better days. Pictures below. Side note, does 24 knots sound about right for this motor? Obviously the motor does not come with a tachometer, but by the sounds of...
  5. 6

    1978 Johnson 70hp being a bi**h

    I am not sure which prop is on it.
  6. 6

    1978 Johnson 70hp being a bi**h

    Mr.giggles, I would definitely call it a governing screw. You have the throttle/timing arms, and there are two set screws that control how far those arms can move exactly. The bottom screw controls low end idle speed, and the top one controls how far you can push the throttle. Pappy, the boat...
  7. 6

    1978 Johnson 70hp being a bi**h

    Alright. It’s been a long time since I have posted. I personally hate it when a forum doesn’t specify what the problem was, and no one hears from the publisher again. I decided to drop it off to a local mechanic that said he could get to it in a couple days, but it sat untouched for two months...
  8. 6

    1978 Johnson 70hp being a bi**h

    Thanks, pappy. The price was a little ridiculous, bust out another thousand, huh? Thanks for the help!
  9. 6

    1978 Johnson 70hp being a bi**h

    Update. The new OEM carb rebuild kit came in and was mostly installed. There were caps in there that I was not going to attempt to drill out. I installed everything and now it does mot like to start and when it does the idle skyrockets. I am throwing in the towel and bringing it to a mechanic. I...
  10. 6

    1978 Johnson 70hp being a bi**h

    New spark plugs were verified and gap is correct. Those old plugs are long gone. It doesn’t have any power as in it does not like to idle when put into gear, and falls on its face. WOT feels like I strapped a 5hp motor to the boat. Basically it sounded like a four stroke, or an extremely unhappy...
  11. 6

    1978 Johnson 70hp being a bi**h

    I purchased a 68 glasspar for $200 and a case of beer. The boat came with a 68 evenrude 75hp that has something living it it. I scrapped the motor and bought a 78 Johnson 70hp for $700. It runs great out of water, but does not have much power in the water. I now have the carbs apart and have...
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