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  1. 9

    Runs Well, Can’t Reach Top Speed??

    never heard of a motor without an idle timing spec. motors need to have timing set for start and idling and timing advanced to a set timing for them to run properly at higher RPM
  2. 9

    engine stalls past 4000 rpm Suzuki DF175

    testing is needed, not just throwing parts at it and hoping. rail pressure would be a good start. but the collapsing bulb did indicate a restriction on the fuel system. did you get that stopped?
  3. 9

    2000 C40TLRY 40 hp 2 stroke

    did you drain the carb bowls after running the fuel out before putting away? running until motor dies still leaves fuel in the bowls, then the gas evaperates, but leaves oil and gas residue in there that will plug up jets/passages. This motor does not have a choke, At start up the prime start...
  4. 9

    Runs Well, Can’t Reach Top Speed??

    did you check with a timing light to make sure idle and WOT timing are both in spec?
  5. 9

    Runs Well, Can’t Reach Top Speed??

    has the motor ever pushed the boat like you want it too? maybe it is just too small of a motor, or it is propped wrong for the load it is trying to push.
  6. 9

    2000 C40TLRY 40 hp 2 stroke

    measuring peak voltages into and out of the CDI is the best way to see if it is working as it should. your service manual has all the specs. a timing light hooked up to the plug wires will show if timing is where it should be along with if there is current heading to the spark plugs. I lost...
  7. 9

    70HP YAMAHA 1990 only runs on 1/3 cylinders!

    you need 1. good compression, 2. good spark at the proper time, 3. and the proper fuel to air ratio for the fuel to burn correctly find out which of those is a problem
  8. 9

    No Power to Boat

    op needs to take it to someone that knows how to troubleshoot the problem. apparently, he does not have the knowledge.
  9. 9

    Suzuki DF50 nuetral safety switch removal

    since this is a remote operated motor, not a tiller. the neutral safety switch will be in the remote control not in the motor. at least that is the way all the boats I have owned have been rigged, but I never owned a Suzuki
  10. 9

    Suzuki DF50 nuetral safety switch removal

    why would you want to? since we have no idea if you have a tiller or remote motor that could have a big difference
  11. 9

    Stumped, one cylinder seems dead

    check the fuel pump. if the diaphram leaks fuel into the crankcase it will cause that cylinder to run too rich. I am guessing #2 is what provides the pulse for the pump on your motor.
  12. 9

    Overheat alarm at idle... I think??

    It would think it to be an inspect, clean, or replace if needed. Kind of like the stats. if you are paying someone to do it, just replace because their labor would be more to inspect, clean ,test and put back in, than the new part
  13. 9

    Overheat alarm at idle... I think??

    PCV stands for Pressure Control Valve or PRV Pressure Relief Valve under high RPM the pressure builds up and over comes the spring loaded valve , dumping excess water lowering the pressure. as I said if it sticks open ,it will dump too much water at lower rpm, the block will not fill with...
  14. 9

    Overheat alarm at idle... I think??

    you had an alarm, and you said you found a stuck open stat. I was just saying I do not see how that could have caused the alarm.
  15. 9

    yamaha 6y5t gauge hook up

    disconnect all gauges to see if fuse holds, and then hook up one wire at a time to see what blows the fuse. may save time and fuses
  16. 9

    Overheat alarm at idle... I think??

    if they stick open the block will not fill up when at low RPM
  17. 9

    Overheat alarm at idle... I think??

    Just to let you know, the 2 stroke Yamahas do not have a low oil pressure light, It would be a low level alarm. and I do not see how a stuck open stat would cause an overheat alarm
  18. 9

    Yamaha 50 tlr prime start test

    how did you verify that it was getting proper power? Setting up a current meter in series to the heater unit would verify it was getting good connection and current was flowing
  19. 9

    yamaha 6y5t gauge hook up

    I would disconnect wires one at a time or maybe all at once from the gauges. see if the fuse still blows. at least then you have some idea if it is a gauge or in the wiring itself
  20. 9

    Yahana 200hp txrr stumbles at idle

    can you get a video and post it up so we can see and hear what is happening? a timing light might show if a spark is dropping if moved around on the different plug wires. or maybe an inline spark tester might show if a plug is loosing spark from time to time. Just never ran into a random spark...
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