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  1. 9

    1984 yamaha 150 2stroke

    yes the pulser coils are under the flywheel along with the charge coils ( that charge the capacitors in the CDI) and lighting coils (that power lighting/and battery charging and other 12 volts needed on the motor)
  2. 9

    1984 yamaha 150 2stroke

    mercury calls them triggers, Yamaha calls them pulsers. if the CDI does not get the signals to fire each plugs, they will not fire. so maybe you should test to see if the CDI is getting the signals
  3. 9

    1984 yamaha 150 2stroke

    I know nothing about a motor that old, but the service manual for the motor should give testing procedures. Peak voltage readings into and out of the CDI should give you some direction to be looking. how many pulser coils does this old motor have telling the CDI when to fire the plugs? my...
  4. 9

    Suzuki DF60A Throttle body.. Is this fully open when in WOT???

    Sorry I did not pay attention to it being a new boat and motor, but I would still be contacting the ones that sold it to you to see what they say this rig should be able to do.
  5. 9

    Suzuki DF60A Throttle body.. Is this fully open when in WOT???

    I would test what you can to make sure the motor is hitting well on all cylinders. the basics Good Compression and spark, and proper timing and advancement should be easy to test fuel rail pressure also if all is good then maybe cleaning and testing the injectors
  6. 9

    Suzuki DF60A Throttle body.. Is this fully open when in WOT???

    I thought it was 200RPM per " of prop pitch change. he said the boat is rated for a 40 to 60 hp motor, so it should not be overloaded if the motor is running properly. the PB I posted for a 60HP Yamaha is kind of confusing sence it ways 60 but also says 70, but even on that 16' it called for a...
  7. 9

    yamaha 2013 waverunner

    glad you got it fixed, and thanks for posting what the problem was. yes rail pressure is a very important test of injected motors.
  8. 9

    Suzuki DF60A Throttle body.. Is this fully open when in WOT???

    what RPM is the motor hitting at WOT with one person and with 2 Here is a performance bulletin for a F60Yamaha, I guess it would be similar. https://yamahaoutboards.com/outboards/115-30-hp/70-50-hp/f60/pb_smk_proangler162_f60lb_2016-05-04_alm
  9. 9

    Suzuki DF60A Throttle body.. Is this fully open when in WOT???

    I agree, what HP motor is the boat rated for? what prop are you running? is the trim set all the way down when trying to get on plane?
  10. 9

    Lower gearcase on 2005 f150

    which shaft seals are you talking about? drive shaft or prop shaft? I still cannot understand how all the lube could be gone and the gear case was not full of water
  11. 9

    my 1989 30hp yamaha is overheating, alarm goes off, motor is pissing strong, i check my thermostat \, it is missing, Could this cause to run hot?

    There is a good chance that the water cooling passages are plugging up in a 34 year old motor due to mineral build up, so someone removed the stat to try to solve the over heating, but it did not help. you can either run some marine descaler thru the motor for a few hours or take the motor...
  12. 9

    yamaha fourstroke crank bearings

    from what I am understanding, it does not have anything to do with the milling of the head, it is to do with the possible warping of the head before or during the welding
  13. 9

    yamaha fourstroke crank bearings

    sounds like he needs to check the cam bearings line up after welding and before milling. If out , maybe line boring the cam holes and then see if you can find new cam bearings to fit the new hole size
  14. 9

    yamaha fourstroke crank bearings

    so is the warp of the head the problem or is the milling of the head surface the problem? if the head was not warped and all the cam bearing are still in line, then resurfacing the head should not be a problem, right?
  15. 9

    yamaha fourstroke crank bearings

    in line with what? I am failing to see how the alignment would change by resurfacing the head to block surface. the belt has tensioner to take up slack.
  16. 9

    Suzuki Dt16 Starter

    good to hear, thanks for updating what the problem was.
  17. 9

    Lower gearcase on 2005 f150

    may be like a friend that drained his lower but did not have the lube to put back in. thought he would pick up some next time in town and then forgot all about draining it
  18. 9

    Lower gearcase on 2005 f150

    pressure test it to find where and how bad it leaks. hard to believe all the lube leaked out and it was not also full of water
  19. 9

    2001 OX66 stumbles at idle after running wot

    Oh, so the line large was suppose to be linkage. the pressure regulator can be tested to make sure it does its thing correctly
  20. 9

    2001 OX66 stumbles at idle after running wot

    not sure what the changing of the oil pump has to do with your problem or what the line large hanging up is about. Or how changing the oil pump would affect the fuel pressure regulator screen. monitor the fuel pressure to see what it is doing when the problem shows up. moving the throttle...
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