CDi

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DrDomRob
Settled in member
Posts: 37
Joined: Sat Jun 14, 2008 4:38 pm
Bike owned: GPX750R, GSXR400, R1
Location: Poole, Dorset (East)
CDi

Post by DrDomRob »

Hi guys,

I believe I have some loose wiring inside my CDi, it appears that the bike will start, then won't start, then will after a few taps of the CDi unit.

This suggests to me it'll be some sort of loose connection. Has anyone had anything similar? Are the ebay CDi's worth it should I need a replacement or should I be hunting for an OEM item?

Dom
stripes1976
Familiar Member
Posts: 399
Joined: Sun Jun 01, 2008 7:14 pm
Bike owned: 6 gk76a's, nc29
Location: 76a mod shop
Re: CDi

Post by stripes1976 »

what model? If its 76 the ebay cdi has only one type and there are two type of timing rotor. Check you loom for continuity first. The cdi could have a dry joint in but check the loom first
DrDomRob
Settled in member
Posts: 37
Joined: Sat Jun 14, 2008 4:38 pm
Bike owned: GPX750R, GSXR400, R1
Location: Poole, Dorset (East)
Re: CDi

Post by DrDomRob »

yeah it's a 76, registered as a 93 but will need to look at the engine and frame numbers to confirm I guess. It's definately not an SP - there is no white thing on top of the carbs.

Cool, when I get the bike back then I'll give it a going over with a multi meter.

Dom
stripes1976
Familiar Member
Posts: 399
Joined: Sun Jun 01, 2008 7:14 pm
Bike owned: 6 gk76a's, nc29
Location: 76a mod shop
Re: CDi

Post by stripes1976 »

i'll rephrase what i said. There are two main types of cdi. the std and sp but within those there are two sub types again. if you remove your timing side case you will see your rotor. There are two types on the 76a. It is always best to check you have continuity in the loom and if you have or havent high resistance in the wiring. The main place for this on the 76a is around the fuse box by the battery tray. Usually a cdi works or doesnt no inbetween :peace:
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Variablevalves suck
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Joined: Sat Jan 24, 2009 10:52 am
Bike owned: GSXR Carb o'ring kits supplied
Location: Stoke-on-trent
Re: CDi

Post by Variablevalves suck »

Could be a simple bad connection at the cdi- take the connector apart and look if any of the connectors are furry and green due to oxidation.
DrDomRob
Settled in member
Posts: 37
Joined: Sat Jun 14, 2008 4:38 pm
Bike owned: GPX750R, GSXR400, R1
Location: Poole, Dorset (East)
Re: CDi

Post by DrDomRob »

I thought the same, either works or doesn't, so I'm going to concentrate on fault finding outside the little black box of tricks.
Oh the joys of electrical fault finding...

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