Search results

  1. 9

    2019 25hp Yamaha Fouls lower plug but not the other ?????

    have you tried to swap the plugs to see if the clean one then worked in the bottom hole and the dark on works in the top hole? how about checking spark with a timing light on both plugs when running good and when not running good?
  2. 9

    1991 Yamaha VX76 250hp Carbed model

    check compression on all cylinders, while you pull the plugs see if one or more looks different than the others. check to see if fuel pumps are working properly and not leaking into the crankcase causing too rich of mix to just some cylinders.( this is my 1st thought of your problem) it is a...
  3. 9

    2015 yamaha 75hp too a 115hp

    are they the same part number, they would need to be for all the parts to fit
  4. 9

    2004 Yamaha F115 TLRC no start when hot

    possibly the VST is getting hot enough to vaporize the fuel
  5. 9

    2015 yamaha 75hp too a 115hp

    yep, takes more fuel and something to oxidize that extra fuel, (more air or nitrous) and then it all has to exit the motor properly too. not easy to throw a set of tuned headers on an outboard to help it breath.
  6. 9

    2015 yamaha 75hp too a 115hp

    compare part numbers on the motors to see if any are the same. 75 to 90 maybe, but I do not think 75 to 115 would be possible unless you did some major modifications and program changing. turbos or blowers too check with some racing forums maybe to see what they say
  7. 9

    Cylinder head anode??? Do I need one??

    after 23 years you may not be able to get it out and maybe even break off pieces that can loge into passages restricting water flow
  8. 9

    2004 F115 Regulator Rectifier Blows Every 12 Hours

    and compare to the reading you get to the Garmin to see if there is a difference
  9. 9

    YDIS SMART ADAPTER,Part Number 90890-06905-00

    ask them why
  10. 9

    2004 F115 Regulator Rectifier Blows Every 12 Hours

    this is one reason I suggested a bad connection
  11. 9

    Hydrofoil Stabilizer for Outboard Motors ?

    my little 16ft Xpress came with one on the 40, I took it off and could not stop the boat from proposing unless I put a bunch of weight up front. transom wedges would be needed to get my motor to kick in far enough to stop it without the stingray foil
  12. 9

    2004 F115 Regulator Rectifier Blows Every 12 Hours

    from what I have read, bad battery connections can cause RR to fail. wing nuts are frowned on. see what you can find online and start you searching
  13. 9

    2004 F115 Regulator Rectifier Blows Every 12 Hours

    that is not what you posted in the original post, so how can we help? having 11.9 to 14.4v when running is a problem. look for bad connections is all I have
  14. 9

    2004 F115 Regulator Rectifier Blows Every 12 Hours

    or a bad connection on the positive or neg side
  15. 9

    Lower Unit Oil Leak

    big question is how long has that water/saltwater been in that gear case? bearings and gears rust and go south as you keep running even with new lube. even the smallest bit of pitting will cause failure when run long enough. inspection would be a good thing IMHO
  16. 9

    Lower Unit Oil Leak

    I would just buy a new seal housing to put back in if you plan on pulling it on a motor that old. but before doing that I think doing the pressure and vacuum test in your service manual on the lower would be a good idea
  17. 9

    Lower Unit Oil Leak

    the original post said he had water in the gear case also
  18. 9

    Lower Unit Oil Leak

    it is just a drain hole to let water out above the water pump. that cavity has to drain
  19. 9

    Yamaha 30 SG carb emulsion tube

    did you find that info just using Yamaha 30SG?
  20. 9

    Yamaha 30 SG carb emulsion tube

    look at a parts breakdown for your motor to find part numbers
Top