Why no spark

[kneedown]

Ok guys I'm getting to the end of my patience with this now, the bike will not spark ( yzf750)

So far I have changed ecu
All relays
Been through whole loom no breaks
Checked coils resistances fine
Checked pickup coil it's fine
Bypassed side stand switch
Checked kill switch
What else can it be that would stop the coils spark

[Ariel Badger]

Have you turned it off and turned it on again?

Try posting in the workshop.
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Bikers make great organ donors, get 115 on your licence today.

[Pete.]

In an earlier post you put that you had changed the ignition switch and the bike starts. What have you changed since then?
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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

[kneedown]

Problem is bike did start and run fine, then one day would not start, tested coils and it was sparking every now and then with plug taken out and earthed

Now there is no spark at all everything else works fine but just will not spark

[N cee thirty]

plugs good ?

battery charged?
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[kneedown]

yeah plugs are fine and so is battery, im baffled as to the cause

[loply]

Checked the leads?

Bike have a tip-over switch?
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Yamaha SZR660 Caution to the wind, the throttle pinned!

[2wheelsteve]

Cut off switch ??? side stand switch ???
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Ride Safe

[monty's double]

pulse generator?

[Jenks]

plugcap/lead?
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1978 MZ TS 250 1 Supa 5
1992 yamaha fzr1000 exup
1998 aprilia af1 sintesi

[Imonster]

Flux capacitor?
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Those who make peaceful revolution impossible will make violent revolution inevitable.

[Welshd1k]

do the plugs spark out of the cylinder?
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

[Welshd1k]

imoboliser?
bad earth
fuse?
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

[2wheelsteve]

Aliens flying over drawing off all the electricity
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Ride Safe

[loply]

Government conspiracy?
____________________
Yamaha SZR660 Caution to the wind, the throttle pinned!

[Shaane]

Green?
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EMRA Roadstock #92 - Paperwork Permitted.
Previous: 1992 DT125R
Current: ~ 2005 ZX6R C1H

[m0l0t0v]

Ran over too many kittens?
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'99 Hornet 600 , VFR 400 NC30 '92 , Kasawamasaki GT 550 , '98 Hornet 600
**\Tarmacsurfer/** said: It's that immaculately manly coiffure of yours isn't it. One glimpse of your virile locks and the punters can't wait to buy whatever it is you suggest, as it might let them be just a little bit like the Adonis that is our very own Molly Doovydoo said: Its not my fault I can't get it up properly, I just wasn't blessed

[Carvel]

Your subframes twisted
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2002 Aprilia RSV1000R, Cbr600Fs, Mk1 B12, Vfr400 NC30...

Matt B: I can deal with crushed nuts to beat Ollie.

[N cee thirty]

fixed yet?
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[kneedown]

Well I haven't seen any aliens but I am sure the truth is out there

Sub frame now straightened

Kittens now cleaned from wheels

Green? No blue

No flux capacitor on this model believe that was only standard on the sp version that's why you don't see any of them unless they have never gone over 88 miles an hour

And no all the things mentions have been checked or replaced and still no sp thank you all for your input though lol

[kneedown]

Actually I forgot to ask how do you test the generator or pulse generator

Cheers

[robbieguy2003]

What colour is the powerband? is it a blue one? if so, it might need a red one.
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Current Bikes: Honda CBR 600RR - '07, Suzuki GSX1250 FA ST '11
Old Bikes: Suzuki Intruder 125 LC - '2001, Honda CBR 600F - '92, Honda CBR 600RR - '03

[kingsknight]

If the warp drive fails to activate, the results could be... unfortunate.
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TS50 (sold) NS125F (sold) NSR125R-K (write off after 2 crashes) CG125 (nicked) XR125L-3 (Sold )-: ) DR125SM '11 (sold yay) XL125V '12 (In love with this bike) XT600E '04 (fun on the dirt)

[kneedown]

I personally tested it up to warp factor 5 when it was running I remember because I recorded it in the captains log.

And powerband is fine I got one off a 98 r1 and it was hand delivered by chuck norris

[Shaane]