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  1. 9

    2008 Yamaha 90 efi is dieing on me

    pump the primer bulb until no more fuel will move.( VST should be completely full) drain the VST into something to measure how much came out. pump it up again and start it up. run it until it dies and immediately turn the key off when it dies, and then drain the VST again to see how much fuel...
  2. 9

    2000 175 HPDI trim issue

    So now we hear the rest of the story. finding what is bent to fix it right could get real involved. and I have no idea how to go about it
  3. 9

    Yamaha 115 S115TLRX midrange struggling

    yes he is correct, the pilot screws adjust the amount of a fuel with air it lets thru and adds that to the air running by the throttle plates. heated sonic cleaner does well for cleaning carbs, better than just shooting the canned stuff into just some places find a Yamaha service manual for...
  4. 9

    2000 175 HPDI trim issue

    it sounds logical, and you will see if there are other wore out parts when you take it apart
  5. 9

    Yamaha 115 S115TLRX midrange struggling

    what are the specs for those pilot screws in your service manual, or are you just guessing at where they should be set? did you follow the link and sync procedure in the manual after putting the carbs back on last time?
  6. 9

    Yamaha 115 S115TLRX midrange struggling

    could be the off idle ports are restricted. small holes that add extra fuel as the throttle plates start opening. or you just need to open up the idle screws a little to give it a little more fuel to help transition
  7. 9

    1988 Suzuki 75 hp 2 Stroke

    it is a 35 year old motor, so look to see how easy the parts are to find if needed
  8. 9

    2008 90TRL need more power!

    High speed/main jets could be a problem if one is restricted.
  9. 9

    whining noise in throttle

    sounds like the motor is overheating or oil pressure is out of spec. the noise and the limiting of RPM is to let yoou know the motor has a problem, and you need to look at your gauges to see what they tell you. and shut down when safe to do so.
  10. 9

    2006 Yamaha F150 wont turn off

    and you can ohm out the harness wires to see if there is a problem before replacing
  11. 9

    2006 Yamaha F150 wont turn off

    my guess would be the 10 pin harness between the motor and controller since those 2 things should not be related to one wire
  12. 9

    Did leakdown test, will a new head gasket help?

    only if the head gasket is leaking. when you test one or both of those cylinders with air pressure on it can you hear air coming out of the other cylinders spark plug hole? or coming out of around the head anywhere? how about coming out of the intake or exhaust? I thought Leak down tests...
  13. 9

    2008 90TRL need more power!

    I would look up some Performance bulletins for your hull with a 90TLR to see what prop was used and figure out what pitch that prop you have is
  14. 9

    BAD CDI? 2002 ox66 saltwater series 2 200hp

    if the rail pressure is not in spec, the motor willnot be getting the proper fuel under a load. check to make sure what the rail pressure is
  15. 9

    BAD CDI? 2002 ox66 saltwater series 2 200hp

    does the rail pressure stay in spec when the problem is happening? have you had the injectors cleaned and tested?
  16. 9

    BAD CDI? 2002 ox66 saltwater series 2 200hp

    a motor can rev up with no load fine, but it needs more fuel to run properly under load. I would still be working on you fuel problem
  17. 9

    1995 Yamaha 130 oil injection lroblem

    sometimes it is a simple thing, and easy to find after you look everywhere else
  18. 9

    LF225XCA Trim Piston Binding

    OK I get it now, you were talking about the down movement when tilt trasitioned to trim. I was thinking in the up movement. that was my fault
  19. 9

    2008 90TRL need more power!

    there is no such thing as a 90TRL. is it a F90 TLR or maybe a 90TLR did this motor ever push this boat at normal speeds and RPM?
  20. 9

    LF225XCA Trim Piston Binding

    good to hear you figured it out, and thanks for coming back to say what the problem was. that was not something anyone would normally see. you had me confused about what you were calling trim and tilt when you said " trim piston binds immediately engaging in trim after tilt." trim is the small...
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