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  1. J

    Needing higher rpm

    I literally just said I had a spare that's a 19
  2. J

    Needing higher rpm

    Jimmbo I never said it was 19
  3. J

    Needing higher rpm

    Ok sorry I was running on a low amount of sleep. The prop that was on it was a 23. I thought it was 17 by one of the set of numbers but put all of them into Google and found out it was a 23. I had a spare that's a 19. As far as the tach goes. It only has a black button on the back so if that's...
  4. J

    Needing higher rpm

    I figured out the pitch on the prop was 23 not 19 like I thought. So I'm way over propped. Both the pontoon and the engine are 1985 and yup its the inline 6 tower of power. Pretty sure the gearing is original. And I was stoked to get 25mph but I wanna get those rpms where they should be. I have...
  5. J

    Needing higher rpm

    I used the motor I had. I know I wasn't gonna gain any speed. The motor is sitting pretty good in the water. Probably about the same as my last boat. I ran through the motor last spring and it ran pretty decent all summer. I was having an issue with a carb adjustment and need to try to...
  6. J

    Needing higher rpm

    The motor seems to be sitting dece I just pulled it off my astro glass bass boat and it had been having a carb adjustment issue. I think it might be running a little rich. I definitely think the tach could be off also. Cheap Chinese stuff. I just did all those run through on it this last spring.
  7. J

    Needing higher rpm

    I recently purchased a 18' pontoon and put my 1985 mercury 115 on it. I'm running 25mph but I'm only getting 2200 rpms mayb 2500. Looking at going from a 13.5 diameter 3 blade prop with 17pitch to a 13 with a 14pitch to get the rpms up. Any suggestions? Will this be big enough of a change and...
  8. J

    1980s mercury 115 tower of power issues!

    Quick question. What would happen if the enricher valve was bad? What kind of symptoms would I be looking at?
  9. J

    1980s mercury 115 tower of power issues!

    I didn't rebuild the carbs but ran a whole can of carb cleaner through them. I'm not really sure I could rebuild them. I'm mechanical but that's a tad touchy for me. I adjusted the carbs in a tank today and I think I got em about right but they kinda jump around so it's hard to tell. The pee...
  10. J

    1980s mercury 115 tower of power issues!

    What year is this motor? I tried looking it up but I couldn't figure it out
  11. J

    1980s mercury 115 tower of power issues!

  12. J

    1980s mercury 115 tower of power issues!

    I live in Kansas smack dab in the middle. Now I was just out tinkering trying to adjust the carbs with muffs on and I discovered something no one had explained to me. Let me see if I'm correct. Does each carb kind of run itself at certain speeds? Like my bottom one seemed to operate the idle...
  13. J

    1980s mercury 115 tower of power issues!

    I honestly don't know. I swear he said slip seal but he could've meant either of those I guess. He said they'd have to split the whole thing apart and doesn't even think he could get the parts because you can't really find parts for these anymore. Said it would cost more than it's worth. I...
  14. J

    1980s mercury 115 tower of power issues!

    I did rebuild the original pump but the last mechanic I took it to said the diagnosis was a bad "slip ring" I think he said whatever creates the vacuum was worn out and not running properly and he professionally recommended I didn't add an electric pump but unprofessionally said it was about my...
  15. J

    1980s mercury 115 tower of power issues!

    I usually add the oil before I put in the gas to allow it to mix it up real good then our lake is about an hr away so I'll sway the trailer back and forth to slosh it around really good. I just checked the old disconnected fuel pump and it had been sucking air could this created a bad air/fuel...
  16. J

    1980s mercury 115 tower of power issues!

    Ya I bought a mixing container that tells you every ratio it's really convenient
  17. J

    1980s mercury 115 tower of power issues!

    Mixing myself. I try to stick to an even gallon amount so I can get it pretty precise. And I use only non ethanol fuel.
  18. J

    1980s mercury 115 tower of power issues!

    I had planned on buying a better fuel pump but didn't want to spend 200+$ if it wasn't gonna fix the issue. I had ziptied it so it doesn't interfere with any moving parts but I tried to also keep it where the existing fuel pump was.
  19. J

    1980s mercury 115 tower of power issues!

    The fuel is brand new non ethanol gas. I personally added the oil at 50:1
  20. J

    1980s mercury 115 tower of power issues!

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