no power and loss of power

[pondy2495]

hi all, I have a lexmoto zsx125. The other day as I was riding home from work their felt like a bang on my bike, It cut out loss of total power everything went I then put it in 2nd and bumped started it and it got me home and I turned the bike off. I went out that evening as I always do to check everything is still working, as I leave early for work, switched on the key nothing no power at all, I've changed battery and noticed fuse has blown so changed that, I then checked it all working fine following morning 5 mins from home boom power all gone, I think it's the same problem I've not done anything yet until I find out the problem , I don't want to take it to the garage until I've tried to find the problem save on to much money spent.
Your help would be really grateful thank you.
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w pond

[WD Forte]

Meter.
Get a meter
Without one you may as well use tarot cards

Also use the enter key more,
blocks of text don't help anyone

A bit if googling tells me Its sohc engine with a DC CDI ( 12v powered)
An AC CDI bike would probably have kept running when you lost all electrical power.

Why did it lose power and how do you fix it?
that's where the meter comes in handy.
It's a simple engine and with a bit of application you'll know as much as any yoof in a garage and you won't have to throw dosh at them

I'd start by removing any panels that give access maybe the seat too and do a visual examination of the electricals first.
The meter will allow you to do voltage and continuity tests and trace any shorts
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bikers smell of wee

[bamt]

As it's taking a while to pop the fuse, I'd be looking for damaged cabling. Look especially at points where it might rub (e.g. where it goes around the headstock, where it leaves the frame, where it enters the headlight if there is a cable bundle there) but check it all for damaged insulation.

If the insulation is worn, then going over a bump may make the conductor touch the frame (or handlebars, or other grounded bit of metal) and pop the fuse. This type of fault is harder to find than a straightforward fuse popping; a meter won't help much unless the loom happens to be shorting at that moment in time.

It could be something else, but that'd be my first guess.

[stinkwheel]

Sounds like you have a short circuit. Had one on my bike not so long ago but it did it when I put the bike on full beam. This narrowed down the wires I needed to check somewhat. Being a bigger bike, it also had seperate fuses for the lights etc.


Have a think. Was there anything in common with the times it happened. Like you'd put the brake on or switched on an indicator? That might narrow down where you're looking.

For fault finding, connect a lightbulb in place of the fuse (presuming it's a blade fuse, a bulb holder with two male spade terminals is ideal). It'll probably glow dimly, normally. When you get the short, it'll light up fully bright instead of blowing the fuse.

Common places for shorts are rubs where the wiring runs past the headstock, under the tank and anywhere a wire could have got trapped under body panels. If the wiring goes up under the mudguard or through a hole in the bodywork/frame, these are also prime candidates.

I'd suggest doing the bulb thing, then run the bike trying all the electrical accessories. Wiggle any wires you can get at. If you don't get a "lightbulb moment", it's down to a laborious visual inspection of all the wiring that had power in it when the cutting out happened.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Robby]

Look for frayed wires around the headstock.