Electrical Issue

[GeordieChambe...]

Hey peeps, I've had an on going problem with my bike not starting immediately (usually have to turn ignition on and wait 5 mins then she starts weird, i know lol)
Anyway due to being stranded and having to get her transported back home I decided to finally track down the Gremlin. I've checked the battery and all the switches and there fine but when I checked the starter switch wire I got loads of resistance (1400+) so I've worked backwards checking the wire and it's took me back to my CDI unit.
Now I know nothing about electrics, so my question is could my CDI unit be faulty and causing my bike to have the delayed starting issue.
Any help with this would be greatly appreciated
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

So will it crank but not fire? Or does it not do anything for 5 mins?
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[Andy_Pagin]

Could be that the wiring has corroded internally, I had this with a Ford Fiesta, the +ve ht lead literally collapsed in a heap of rust when I jiggled it.
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They're coming to take me away, ho-ho, hee-hee, ha-haaa, hey-hey,
the men in white coats are coming to take me away.
Yamaha Vity -> YBR125 -> FZS600 Fazer -> FZ1-S Fazer

[Vincent]

I've never had a faulty CDI, (although I know of at least two early bikes with known CDI problems), but recently, I found that my CDI had come loose and the constant movement had damaged one of the connections. Maybe your ignition switch is worn or rusty.
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Space Is Deep

[GeordieChambe...]

Thanks for the replys, She's still in pieces in the garage while I've been running over her with a multimeter. I've disconnected the ignition switch and tested the ignition wire (orange/yellow) to the CDI and I'm getting loads of resistance (2600ohms).
I've then disconnected the wire from the CDI and checked both ends for continuity only to find there's no problem with continuity. WTF Am I doing this right peeps????
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Pete.]

Can't imagine why the starter switch is connected to the CDi unless it's a signal used to retard the ignition for starting or something. If so, I would indeed expect it to have a high impedance.

You didn't answer the question - what exactly is delayed for 5 mins? Does it crank and not fire or just not crank?
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[GeordieChambe...]

Lol sorry mate nah doesn't crank or fire just silence. Then after 3-5 mins clutch in hit start and she fired up.
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

Have you tried shorting the starter relay?

And can you bump start it in this 5 min delay?
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[GeordieChambe...]

Yep shorted the relay and the starter motor spins
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

[GeordieChambe...]

Yeah exactly the same mate
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[GeordieChambe...]

and yes i doesn't fire either
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

The only way to really test a CDI is to replace it with a known good, but thinking logically this should work:

With the bike cranking (during your 5 minutes of nothing), the CDI should be receiving a voltage from the battery/stator to charge the capacitor, it should also be getting a signal from the triggers to release the charge to the coils, if you have this, then everything pre CDI should be OK.

There should then be voltage coming from the CDI unit to the ignition coils, if there is no voltage coming from the CDI unit to the ignition coils then the CDI unit is faulty.

If there is voltage entering the CDI then something after the CDI is broken.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[GeordieChambe...]

Thanks for that, when you say cranking does that apply to an electric start or a kickstart as my bike only has an electric start.
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

[GeordieChambe...]

Okay, will that not damage my bike if I keep it bridged for more than a few seconds?
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

Just crank it in 10 second bursts, and get ready to charge your battery.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[GeordieChambe...]

Right so finally got the time to test that previous comment and I am getting voltage to the ignition coil from the cdi but am now stuck on what I would check next. Anyone got any ideas???
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Pete.]

Shorting the relay only proves that the starter is working.

I think you have an electrical breakdown in a switch or connector. first I would check that the clutch switch is not sticking in, then I would check the run switch and probably clean the contacts, then I would check the fuses for corrosion then I would unplug the CDi and check the terminals for corrosion.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[GeordieChambe...]

Done all of them mate, the last tip I was told was to bridge my contacts then check voltage is getting to my ignition coil to make sure my CDI is working. So since I'm getting voltage at my coil I pretty sure the CDI isn't faulty, the only thing is I don't know where to go from here lol
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[GeordieChambe...]

Just out of curiosity where would the ground points be on my bike or does it only have one? As I can only find one
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

[GeordieChambe...]

The plugs a spare I had under my seat and yes my multimeter is saying im getting voltage to the HT lead.
No I'm not getting a spark at all.
I don't have the earth wire or gloves to try that last part tho mate
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Suzuki GZ125 (03) - March 2013, CBT - April 2013

[Aff]

Is the plug a known good?

And what voltage you getting?
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[mentalboy]

Does this problem occur every time you start her up or just when she's cold?
It does sound more like an electronics issue than a random electrical one ( by that I mean items that control electrical system rather than wiring/plugs etc.) Poor contacts/wiring are usually more random when they start to breakdown, but I'd try lubing all safety contacts (clutch, sidestand etc) first
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Make mine a Corona.