Man Down!!! Won't Turn Over.
Today I went out to my bike and tried to start my bike, I turned the key and turned the bike on, but that normal buzz sound that i hear never turned on and when i tried starting it, it would just never turn over....I got home tonight and turned the key again to see if that sound would start, but never did....I also noticed that the headlights didn't turn on and and the front blinkers didn't work, but the rear lights/blinkers worked fine.....any ideas?
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1) Killswitch?
2) FPR? 3) Bad battery? |
Check the front harness down by the left intake. The green ground wire is known you get corrosion on it and therefore the fuel pump will not prime. Take it apart, check for corrosion, clean terminals, check for good connections, put dielectric grease on it, put it back together see if that does the trick.
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That buzzing sound your talking about is your fuel pump (I believe) priming and getting ready for a turnover. Remeber these bikes are fuel injected and more electrical than a carb'd bike. Seeing as you said the lights dont work, I would check for a dead battery as the electric to lights and pump just doesnt seem to be happening
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I checked the battery, took it to honda and had it tested it was fine, took off the left intake all the wires and connectors looked fine, still no startup.....changed the fuses and still didn't work, i'm running out of ideas! :(
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as F4ith said... 2) FPR (fuel pressure regulator)
but you should probably do a really in depth clean and check of relevent wires/connectors before replacing the fpr. just looking at them won't necessarily reveal the corrosion/break. |
Correct me if I am wrong but the FPR will not stop the pump from priming. The only things will will stop it are: ignition, kill switch, BAS and the gray harness by the left intake. My assumption is going to be a bad connection in the gray harness. It is rather typical in these bikes and a common symptom of this is the no head lights. It took me a year and half to find my gremlin in that front harness but finally did. BAS do not normally go out on these bikes. If you want to double check it you can bypass it. Kill switches normally don't fail either. Some times they get stuck but a couple flips back and forth should free it up. I would spend some time looking over that harness very carefully. Inspect each wire for not only corrosion but a good connection. It doesn't take a lot for the connection to get lost. https://cbrforum.com/forum/f4i-main-forum-11/my-f4i-so-frustrating-109400/
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With a bad FPR the fuel pump will still prime
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Not sure if it works for our bikes but give it a try. If it is a bad FPR it will make it run crazy rich. Try holding the throttle fully open and crank it then. This will induce a lot of air in the cylinders trying to lean it out. Maybe the plugs are fouled out not giving it a adequate amount of spark and causing issues with start up. Just a guess you could look into.
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First grade question, but what is BAS?
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Nevermind, I'm guessing bank angle sensor
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