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  1. 9

    Yamaha 15 hp 4 stroke primer start

    use a timing light to verify the timing is in spec . and changing as it should when it should. I know nothing about your 15 4 stroke motor. I have run into 2 CDIs on 2 stokes that had problems with timing at idle and people jacked the carb linkages all out of spec trying to make the motor run...
  2. 9

    Yamaha 15 hp 4 stroke primer start

    well, if you motor will not idle properly after the motor has warmed up and the timing is set back to normal idle timing , you probably need to clean the carbs. something is causing the pilot /idle jet or passages to not furnish the proper amount of fuel to air.
  3. 9

    Yamaha 15 hp 4 stroke primer start

    when you fire up the motor, you should let it warm up before putting into gear. It is not called primer start
  4. 9

    Fogging f90 efi

    do some searching online and read what is said by manufactures of the motors or watch some videos. you are the only one that can make the decision on if you fog your motor or not. the people that say it is not necessary will not have to deal with your problems if they do happen, so do your own...
  5. 9

    Yamaha ignition coils

    they make and sell Peak reading voltage meters made for taking reading on these CDI ignition systems. take reading on the inputs and outputs of the CDI. Or a DVA adapter with a regular voltmeter. If you want to take reading on the outputs of the coils heading to the spark plugs you would need...
  6. 9

    Fogging f90 efi

    I also would think protecting the shiney parts inside a 4 stroke would be a good idea if it will sit for months
  7. 9

    Fogging f90 efi

    what is this synthetic fuel in a can you speak of for 4 stroke outboards?
  8. 9

    yamaha 2013 waverunner

    what is the fuel rail pressure doing and compression reading on each cylinder? no need to post videos, just give the readings. waste of your time and ours watching I never heard of someone dumping pure ringfree into a cylinder before, where did you get that from?
  9. 9

    Crud in carb bowl

    I would think it had water or some other stuff in the bowl to look like that. what did you use to sonic clean the carbs? I am having a hard time figuring out what a 2004 Yamaha 40ELPTO is. that does not line up with anything here in the USA
  10. 9

    Stalling low speed outboard

    Without the model of your motor, all I can do is guess this motor has carburetors and you talk about a choke for cold starting. sounds like your carburetors need cleaning. Pilot/ low speeds jets/passage have a problem
  11. 9

    30hp yamaha outboard not firing one 1 cylinder

    measuring the peak voltage into and out of the CDI and comparing those readings to spec in service manuual may tell you if there is a problem with a charge coil, pulser coils, etc. It is very hard to know what tiny fire means
  12. 9

    2008 Yamaha P90TXR block

    I did something similar to the exhaust plate on my C40. But used JB weld marine putty. You need to use a file to make sure the sealing surfaces are flat and in line with the rest of the surface. hard to do with the power head bolted on the motor, not much room.
  13. 9

    Yam 50TLRC 2004 I need a tank to motor hose assbly that fits this motor ??

    where did you get the tanks from? if they were rigged for a different brand of outboard the fuel line may not fit that tank connector
  14. 9

    2008 Yamaha P90TXR block

    was there a leak there before you replaced the head? or was the head warped to meet up to that bad spot on the block?
  15. 9

    2008 Yamaha P90TXR block

    if the head is on the right side of pic, that new head is not flat
  16. 9

    Spark Plugs 40 Hp 4 Stroke

    No idea what you are seeing, pic is worth a 1000 words
  17. 9

    z200txrc wont run

    Key switch would be the 1st thing I would be checking. Something is getting power in start position, but not in run position. But it never hurts to monitor fuel rail pressure, spark, and injector firing to see what is missing to narrow down what to be looking for.
  18. 9

    Finding model # on my Yamaha

    from what I have read and seen it is not a metal stamp, it is a round sticker with a serial number for your motor. you can use that to get the model on Yamahas site
  19. 9

    To low idle speed

    ECUs can be damaged by a stuck IAC also, the ecu keeps trying to adjust the idle and overheats the internal ecu circuit. you can try to get them to help, but I would not expect them to
  20. 9

    2019 suzuki 20hp alarm

    possibly overheated and warped the head. check plugs for signs of water, do a compression check or leakdown test on the cylinders
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