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  1. 9

    Bad Spark plugs?

    Just my opinion, the ones with the tan colored porcelain look like they should, the ones that are still white are not getting proper fuel to burn properly
  2. 9

    1989 DT115- High idle 'scream' then chugs/quit

    some outboards advance the timing at start up and then drop timing back to normal, this causes a fast idle during the warm up. service manual for your motor should give specs for timing, and is easy to check to see what it is with a timing light
  3. 9

    DT200 Power Head Experience - Remove Cylinders?

    I never heard of a outboard that you could pull the cylinders out of the block. have you looked at the parts breakdown to see what it shows?
  4. 9

    Yamaha 2014 F175XA WOT RPM Drop

    only a restriction would cause the bulb to collapse . the pump sucking OK but not enough flow did you loosen the gas cap to see if that helps? does the pick up tube have a sock/screen on it? maybe the anti syphon valve sticking
  5. 9

    Yamaha SHO shutters and shakes, no acceleration

    I would think since you are not getting any alarms, then you are left with possible low rail pressure due to plugging VST filter or plugging injector screens. at least that is what I would start out looking at
  6. 9

    Yamaha SHO shutters and shakes, no acceleration

    do you have gauges on that boat to tell if there is a problem with the motor? and do you know if the alarm systems work properly?
  7. 9

    Warning buzzer

    As far as I know the only thing that will set the alarm off is over temp on that motor . pull and test stat for proper operation and look inside the passage behind the stat to see what it looks like. My brothers C60 tends to set off the alarm when running WOT. when we pull the stat there is...
  8. 9

    Warning buzzer

    Is this a C60 or is it oil injected? always good to post complete motor info, so everyone knows what motor you are talking about
  9. 9

    Warning buzzer

    water pump and stat would be what I would look at
  10. 9

    Help , no high speed ...

    float setting will not help if the lift pump can not keep the VST filled. monitoring the lift pump pressure and rail pressure will tell you something about what is going on when the problem shows up. if the tech ran it on the water, surely he monitored pressures to see what was going on
  11. 9

    Help , no high speed ...

    sounds like VST is not staying full so it runs out at higher RPM because it uses more fuel at higher RPM. what do the pressures do when the problem shows up
  12. 9

    Help , no high speed ...

    what all did he do for that $600
  13. 9

    1994 Yamaha 30 horsepower outboard motor/ power tilt ?

    one boat unit is a lot to pay for T&T for a 25 year old 30
  14. 9

    2006 Yamaha 150 TXR bogging issue

    I see no way a sticky stat would cause it to bog down to 4000 RPM
  15. 9

    1994 Yamaha 30 horsepower outboard motor/ power tilt ?

    how are your googling skills? should be easy to find aftermarket tilt for outboards
  16. 9

    9.9 4 stoke crankshaft

    yep when trying to measure small resistances always measure lead resistance and subtract it from the actual reading. they use small flexible wire in the leads of different lengths, so no way they will be 0
  17. 9

    Pouring out fuel

    does it only leak when you tilt it up? if so that is when you should be looking
  18. 9

    9.9 4 stoke crankshaft

    so if it reads1.0 when touched together ,how can you measure .26 or .9 ohms
  19. 9

    9.9 4 stoke crankshaft

    So it should be a T9.9 bad rod bearings or piston pin maybe. have you check to see what your meter leads resistance is?
  20. 9

    2013 Yamaha 25hp 4 stroke running hot

    you should never flush the crankcase with water and saltaway. crankcase is for oil
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