Question about 2011 Honda SH125i

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2011 Honda SH125i engine bogs

I have a SH125i and when I twist the throttle check engine lamp blinks and the engine is running very slow, in this moment if no throttle is used the lamp FI from dashboard stops blinking and the engine is running normally. The fuel filter is very clean, the air filter has been changed but I don't understand what happened. Please help me !!!

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  • Honda Master
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Hi, Ene_marcel20 it should be noted that the reasons your EFI light stays on constantly or flashes and your bike will or will not start and may turnover or not, these conditions will vary from bike to bike depending on the year, make, and model and you should always refer to your owners/service manual for proper diagnostic procedures. It should also be noted that any type of prior work done to the bike or an abnormal event occurrence IE: adding accessories, electrical curiosity/adventures, laying bike down/crashes, rain storms/bike washings just before EFI light issues started can be significant hints/aids into tracking down the gremlin, also carry the appropriate jumper wire to access fault codes to reduce the risk of being stranded or towed, that being said the usual suspects are:
1. Faulty Fuel Pump, fuse or system relay switch.
2. Battery starting to fail due to old age/damage, perform a load test.
3. A discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Faulty safety switches/sensors: run/off, ignition, clutch lever, neutral, side stand, tip over, fuel, and or their connections.
5. Broken wire or worn insulation exposing wire to a ground situation especially inside wire harness at tight bends around fairing brackets, under dash panels, under fuel tanks over cylinder heads etc. Many harnesses are open on the ends that will allow water to enter and accumulate at v-bends.
Dielectric grease and contact cleaner are your best friends for wire/cable/harness connectors, look for corroded, broken, or loose pins/sockets.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Ruckus bogs down when try to accelerate Ruckus Central
scooter keep bogging down under throttle
http://www.family-motorsports.net/GY6-50cc-150cc.pdf
http://www.partsfish.com/page/oem-parts-for-honda
Honda SH125 Owner Manual

Posted on Sep 25, 2017

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Posted on Jan 02, 2017

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MakisRC51
  • 408 Answers

SOURCE: FI warning lamp on dashboard

2 long and 3 short blinks equals #23 malfunction which is the O2 sensor (California type ONLY).It is either not plugged in correctly, dirt on it's connectors or it is broken and need to be replaced.

Posted on Jul 02, 2009

  • 269 Answers

SOURCE: problems with fuel injection at low rpm

Unfortunately you may end up having to take the bike in for service. However, perhaps we can outline a few items that maybe at the cause of this so you won't be "surprised" by the shop's findings.
First off if this a sudden new problem and you are on the same tank of gas? It could be poor or bad fuel. It happens, otherwise you are going to have to interact with the fuel system. Have you change the pipe or aircleaner?
The interacts with the bike by way of cable, computer, and software. A couple of buzzwords are Idle Air Control and or Mass Air Sensor. They or other sensors may be faulty and need replacing. You cannot know this without interacting with the fuel system, sorry.
Hope this helps.

JP

Posted on Dec 16, 2009

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