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>> >> 2018 Suzuki GSXR1000R Fuel pump Waveform, Thoughts https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl?num=1727889152 Message started by Revved on Oct 2nd, 2024 at 9:12am |
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Title: 2018 Suzuki GSXR1000R Fuel pump Waveform, Thoughts Post by Revved on Oct 2nd, 2024 at 9:12am
This is the second time using a scope so bear with me here.
Im working on a bike that has some very intermittent issues with power loss. It can go a couple of days with no issue at all. I have yet to encounter it myself. Im currently looking at the fuel pump, felt like it was the most likely issue and easiest thing to get to. Fuel pressure was great. I would be curious what you guys think of the fuel pump current waveform I captured. By my research fuel pump waveforms aren't as helpful as others at diagnosing but I still dont think mine looks as clean compared to the examples of others out there. Should I be concerned about this waveform? Screenshot_2024-10-01_120415.png (63 KB | ) Screenshot_2024-10-01_112357.png (72 KB | ) Screenshot_2024-10-01_112429.png (62 KB | ) |
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Title: Re: 2018 Suzuki GSXR1000R Fuel pump Waveform, Thoughts Post by Grant Baker on Oct 6th, 2024 at 9:22am
I can't offer much feedback since I'm not familiar with Suzuki motorcycle fuel systems; and, have no access to a wiring diagram or service information for this fuel system. Anything you can share in that regard will improve your chances of getting feedback.
Did you have the sample rate at 1M/s (sample interval at 1us)? Adding two waveforms: voltage on power side and voltage on ground side... will help give us a better picture of the situation. I don't like the sharpness of the top and bottom peaks either. However, all commutator segments have sharp top and bottom peaks and their amplitude is not huge so I am inclined to ignore them as possibly normal for this pump motor. What was the fuel pressure during this capture? I would focus on duplicating the loss of power concern. Interrogate the owner about length of ownership, service history, type of fuel, fuel additives, fuel age, refueling habits, driving habits, distance and time elapsed from starting engine to experience the symptom, etc. |
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Title: Re: 2018 Suzuki GSXR1000R Fuel pump Waveform, Thoughts Post by TrevorSchlientz on Oct 7th, 2024 at 11:56am
+1 to Everything already stated.
I would also look for a known good on a similar bike. Also, keep practicing with the scope on good working machines so you can learn what good looks like. Can you post your capture so we can open it in Picoscope? |
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