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Mrdodge7 |
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Mrdodge7 L Plate Warrior
Joined: 13 Jan 2021 Karma :
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Posted: 18:45 - 13 Jan 2021 Post subject: Bike cut out today and now won't start |
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Bike is a Honda CBR 125R 14 plate, had it for two months and its been perfect up until today, was riding to work this morning in light rain, all good, got to work pulled the clutch in and rolled up, the bike cut out, wouldn't start for love or money after it cut out so I left it a couple of hours, came back and it started first time on the button. Now it won't start again , managed to bump it and it ran for a minute then cut out, I was keeping revs on about 4k. It still won't start. It just cut with no sputtering or popping.
Any ideas what this could be?
I cant check potential issues right now and couldn't at work before I left because it was raining quite heavy, so the bikes stuck at work and I'm at home. |
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ThatDippyTwat |
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ThatDippyTwat World Chat Champion
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Mrdodge7 |
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Mrdodge7 L Plate Warrior
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Robby |
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Robby Dirty Old Man
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NJD |
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NJD World Chat Champion
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Posted: 19:16 - 13 Jan 2021 Post subject: |
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Now might be a good time to check your insurance policy documents to see if breakdown cover is included on the policy, or give them a call to find out what cover is included (and how far from home you need to be before the cover is activated, or up to what amount of miles they will recover you from and to for free). If you do have breakdown cover then it may be a good idea to save that number in your phone, and make sure you have good charge and credit on it at all times (I carry a cable and power-bank with me often for good measure).
If you don't have breakdown cover I believe AutoAuid or AA are recommended on here, but I've never used a company outside my policy (SOS Motorbike Recovery) which are decent. Worth noting that carrying a mask with you at all times is a good shout because, as I found out on my last call, some wont pick you up without one.
With that aside -- and the only reason I say that is because you aren't always going to be in a safe place (work) when something goes wrong, and could be anywhere in the country -- I'd say your issue sounds like a build up of moisture and condensation getting into the wrong place and causing intermittent starting issues.
Some of the things I'd look at would be:
condition of the spark plug when removed (just to see if there's any running issue)
replace the spark plug cap for an NGK one
put some Vaseline or such like on the battery terminals to prevent corrosion etc (I've never had an issue doing this, others may object)
clean and grease the clutch switch
sidestand switch (generally better disconnected if the bike will run with it unplugged)
could be a build up of moisture in the switchgear causing problems with the starter button
Just a brief list, and I'm sure plenty more helpful responses will follow. ____________________ The do it all, T̶h̶e̶ ̶b̶r̶o̶k̶e̶n̶ ̶o̶n̶e̶,̶ ̶T̶h̶e̶ ̶b̶i̶g̶ ̶l̶u̶m̶p̶,̶ ̶C̶h̶o̶n̶g̶ ̶N̶o̶o̶d̶l̶e̶ |
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oilyrag |
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oilyrag Nova Slayer
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WD Forte |
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WD Forte World Chat Champion
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oilyrag |
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oilyrag Nova Slayer
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WD Forte |
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WD Forte World Chat Champion
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Mrdodge7 |
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Mrdodge7 L Plate Warrior
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Mrdodge7 |
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Mrdodge7 L Plate Warrior
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bypass2 |
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bypass2 Spanner Monkey
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Mrdodge7 |
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Mrdodge7 L Plate Warrior
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bypass2 |
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bypass2 Spanner Monkey
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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Kawasaki Jimbo |
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Kawasaki Jimbo World Chat Champion
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xX-Alex-Xx |
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xX-Alex-Xx World Chat Champion
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Mrdodge7 |
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Mrdodge7 L Plate Warrior
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Robby |
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Robby Dirty Old Man
Joined: 16 May 2002 Karma :
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Posted: 11:03 - 14 Jan 2021 Post subject: |
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The reason for a lot of seemingly random suggestions on this thread is that the bike is a 6 year old 125, and 125s have a hard life with a succession of teenage owners. The problem is far more likely to be down to someone else's bodge that to a normal part failing.
That said, CBR125s of that vintage (and possibly others, but I have worked on one from around that time) have quite a few poor quality parts.
The fact that the side stand switch doesn't work means someone has messed with it before.
So, chasing an intermitted fault. Chances are that it's an electrical problem affecting ignition (spark). It sounds like the fault is stopping the bike from running altogether, which points at the various safety and security circuits. First places I would look:
1. Side stand switch and its wiring. You said that it doesn't have a side stand cutout, or it doesn't work. For reference, a side stand switch stops the engine if the stand is down when the engine is in gear. It has no effect when the engine is in neutral (assuming the neutral light works). If it doesn't work, it usually means it was playing up before and someone disconnected it and twisted the wires together. Find this bodge and either improve the bodge, or reconnect the wires to the switch and give the switch a really good clean.
2. Ignition barrel wiring. I saw this on a CBR125. The wires from the ignition barrel can get chewed up by the lock stops where the bottom steering yoke meets the frame headstock. This then allows the wires to short out on the frame, often when the steering is turned hard to the right. Have a good look at these wires - a torch helps. If they look chewed up then fix them. An appropriate short term fix is to wrap the affected area of each individual wire in electrical tape, then wrap the whole bundle. |
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Mrdodge7 |
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Mrdodge7 L Plate Warrior
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oilyrag |
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oilyrag Nova Slayer
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F18 Renault 5 Driver
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SirFallalot |
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SirFallalot Trackday Trickster
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Old Thread Alert!
The last post was made 3 years, 86 days ago. Instead of replying here, would creating a new thread be more useful? |
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