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  1. 9

    2003 ox66 200 intermittent shut down

    loose red wire would mean a bad connection to me, depends on what your definition of loose is
  2. 9

    2003 ox66 200 intermittent shut down

    if you truly believe the VST is not running out of fuel and the pump in the VST is not running when it dies, then monitor the + to the pump to make sure it stays on. the ECU should toggle the neg to make the pump run, it will not run if the + is not there
  3. 9

    2003 ox66 200 intermittent shut down

    might check to see if 32psi is the correct spec on what pressure you are reading. ( Rail or even the lift pump pressure) If you still have spark on the plugs, then you need to find out if the VST is running out of fuel or if injecter pump is shutting down when it dies. quick way to tell would...
  4. 9

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

    should have brought the project motors home with you to work on during the winter. poor planning
  5. 9

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

    if you are still waiting on the seal, why not work on this problem to get it taken care of?
  6. 9

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

    still need to see if one or both are getting spark when it runs bad. Have to eliminate what you can from being the problem, to search for only what truly is the problem. as I said an inductive timing light will show if spark is happening and if it is steady and it can show you if the timing of...
  7. 9

    2004 Yamaha F115 TLRC no start when hot

    I do not remember which motors, but some had Yamaha make kits for overheating VSTs just something to look into
  8. 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?
  9. 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...
  10. 9

    2015 yamaha 75hp too a 115hp

    are they the same part number, they would need to be for all the parts to fit
  11. 9

    2004 Yamaha F115 TLRC no start when hot

    possibly the VST is getting hot enough to vaporize the fuel
  12. 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.
  13. 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
  14. 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
  15. 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
  16. 9

    YDIS SMART ADAPTER,Part Number 90890-06905-00

    ask them why
  17. 9

    2004 F115 Regulator Rectifier Blows Every 12 Hours

    this is one reason I suggested a bad connection
  18. 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
  19. 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
  20. 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
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