Suzuki DFxxx outboard loosing power at 3000rpm fix
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- Опубликовано: 13 сен 2024
- Suzuki DFxxx outboard loosing power at 3000rpm fix. High pressure fuel pump screen. After removing the intake, you must take apart the vapor separator to get to the float and fuel pump. But would always start up no problem and run at low speed perfectly. Upon cleaning out, it would lose power intermittently and never Ravel over 3000 because the fuel inlet was blocked by the pick up screen. No computer codes, No warnings, no flashing lights, just power loss. Hopefully this saves you hours of troubleshooting and steep dealer charges.
Sweet! Nice video man, really informative! Thanks for making this :)
I'd be willing to bet that the lower pump cap with the filter screen fell off the pump when you pulled it out of the bowl. There's no way the pump could have fit in the bowl unless the cap was installed and aligned correctly. Also, you said this was a "fix" but never said if it actually fixed the issue.
Excellent video
There is one sensor (the neutral throttle switch) that prevents the engine being over revved in neutral, but that limits rpm to 3000rpm approx.
In other words, in neutral won't go faster than 3000 rpm. It is a self-protection. Under load should work at much more revs, unless the sensor is defective, or there are other mechanical or electrical problems.
did you find that after you replaced that piece that your issue was fixed. My Suzuki 140 is doing the exact same thing as you described.
I have exactly the same problem, but my motor has only 29 hours. Mine constantly above 3000 RPM. Trying to avoid initial tear-down, I installed a pressure gauge in line between the high-pressure pump to see if the pressure fluctuated any during the surging. Logic tells me that if the suction does get blocked, the fuel flow will stop until the motor drops RPM to 3000 and the black plastic screen cap drops down to allow fuel to flow again. My assumption is that the pressure in the line should fluctuate too. I ran it several times and the fuel pressure stays at 52 pounds through the entire surging action. Any thoughts?
Thanks Leon
Does the drain tube ever drain anything ever? Mine doesn’t have anything coming out, supposed to do that in the winter/storage to keep vst dry and clean
How old was your outboard? Mine has around 50 hours on it and is doing similar. Haven't noticed what RPM i get up to but i'm only able to flow at around 9 gallons per hour.
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Mu Suzuki 140hp the RPM no going up than 3000, I have 2 engine in my boat and both with the same issue. Can any one help on this?!
if you need help i will help you
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