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  1. 9

    Suzuki 20hp … add a bit of power

    the fact that the motor RPMs go up high at full throttle means the motor has the power to turn the prop, so putting more HP into the prop will solve nothing. if you know it hits 4400RPMs at half throttle to me is sounds like it maybe too small of a prop. what RPMs does the motor hit at WOT...
  2. 9

    Suzuki 20hp … add a bit of power

    where is the cavitation plate in reference to the bottom of the boat? Maybe that motor is a short shaft and you need long shaft.
  3. 9

    Suzuki 20hp … add a bit of power

    Sounds like the motor prop maybe sucking air or some other thing is causing adisturbed water at the prop. maybe motor is mounted to high, need to get the prop farther into the water
  4. 9

    battery Volts go to 14.9/15 at idle

    rectifier/regulator would be my guess
  5. 9

    150 f stroke won't start (2017)

    take a voltage reading on the battery while you hit the starter. may be a bad cable, bad connection, or a bad start solenoid
  6. 9

    Yamaha 90 hp 2 stroke

    bottom carb is usually the one that collects a lot of junk for some reason. if that cylinder leaned out it will get too hot and score the cylinder walls. boring and installing an oversized piston would be needed. or boring all 3
  7. 9

    Yamaha 15 hp 4 stroke primer start

    My1999 C40TLRX 2 stroke has 2 temperature switches on the head, one tells the CDI when the motor is warmed up and the other tells when the motor is overheated. I have no idea what tells you CDI or ECU when the motor is warmed up so it can change the timing at idle or even if there is something...
  8. 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...
  9. 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.
  10. 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
  11. 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...
  12. 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...
  13. 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
  14. 9

    Fogging f90 efi

    what is this synthetic fuel in a can you speak of for 4 stroke outboards?
  15. 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?
  16. 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
  17. 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
  18. 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
  19. 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.
  20. 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
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