fekking annoying

[aff-man]

Ok last time i rode the bike i had it on the back wheel when she began to splutter (whaich made for an interesting landing) but i wan't tooo worried just thought it might be something minor. Then it cut out once or twice at the lights and i'm thinking hmmm might need to turn the idle up.(this was saturday). Today i go to ride the bike (been home for 2 days loafing about and doing as little study as possible) and i think hmm havn't ridden her for a while so turn off the lights and turn the choke up and start her up. Vroooooooooom first time sweet as. But then something wierd happens it hold revs at about 4k for like 3 secs then momentarily cuts out and then goes back up to 4k (probably jumping itself), does this for a little while then cuts out completely. Start it up again same thing. Getting confuzzeled so decide to see how she rides makes it very very interesting (don't even get to the top of the road without it cutting out half a dozen times) Take her home and make sure all the electrical connections are sweet (unplug replug). Put bike back together and turn her on and she seems to run sweet. Take her to the top of the road yeh sweet get to the first give way corner and mid corner she cuts out (NOT RECOMMENDED as is makes the bike engine brake very hard mid corner) I managed not to bin it but enough is enough i am going straight home (less than 1 mk)but then on the way home she cuts out another half dozen times. So what could it be ,cause i am now about to put the bike in a large incinaratory device.

[MrMelon]

There's gotta be an electrical connection loose in there somewhere!
My tzr was doing the same thing. There was a plug that looked like it was plugged in properly, but wasn't quite seated properly, so every now and then it'd cut out and come back to life.

[Blakamin]

Kill switch???
my cbr did something like that...all things plugged in but 1 wire was corroded off the terminal in the plug.... fixed that and away it went
it looked and felt plugged in....
tug a coupla wires on the terminal block and see if any come off!

[aff-man]

yeh that was my thinking. Does anyone know of that sray in stuff you put on the plug and then reconnect them so they make a good connection.

[kerryg]

Ok last time i rode the bike i had it on the back wheel when she began to splutter (whaich made for an interesting landing) but i wan't tooo worried just thought it might be something minor. Then it cut out once or twice at the lights and i'm thinking hmmm might need to turn the idle up.(this was saturday). Today i go to ride the bike (been home for 2 days loafing about and doing as little study as possible) and i think hmm havn't ridden her for a while so turn off the lights and turn the choke up and start her up. Vroooooooooom first time sweet as. But then something wierd happens it hold revs at about 4k for like 3 secs then momentarily cuts out and then goes back up to 4k (probably jumping itself), does this for a little while then cuts out completely. Start it up again same thing. Getting confuzzeled so decide to see how she rides makes it very very interesting (don't even get to the top of the road without it cutting out half a dozen times) Take her home and make sure all the electrical connections are sweet (unplug replug). Put bike back together and turn her on and she seems to run sweet. Take her to the top of the road yeh sweet get to the first give way corner and mid corner she cuts out (NOT RECOMMENDED as is makes the bike engine brake very hard mid corner) I managed not to bin it but enough is enough i am going straight home (less than 1 mk)but then on the way home she cuts out another half dozen times. So what could it be ,cause i am now about to put the bike in a large incinaratory device.

Well I was going to say it's either electrics or fuel....but suppose that's not much help.

Sounds like it is stopping dead rather than coughing and spluttering and petering out. Is that right? If so it is most likely electrical. And it won't be plugs or coils 'cos 4 plugs/2 coils won't crap out together. Because it's intermittent I'd firstly carefully re-check that all the wiring and connectors are sweet (no breaks or shorts or whatever) including perhaps your engine cut-out switch (does it also have one on the side-stand?). If the problem is still not found I guess it's a matter of trying to isolate which component is the problem e.g CDI or regulator/rectifier. Others will be better able to advise you how to test those.

If it is petering out, running on 2 or 3 cylinders perhaps, and not stopping dead it's another matter.

[vifferman]

Because it's intermittent I'd firstly carefully re-check that all the wiring and connectors are sweet (no breaks or shorts or whatever) including perhaps your engine cut-out switch (does it also have one on the side-stand?)

Yeah, I'd agree with Kerry's suggestion. Also check the wires going to the ignition switch - sometimes they can develop cracks or come loose, due to movement of the handlebars or chafing on the headstock or whatever.

[aff-man]

nope definatley electrical i am just a bit worried about how i am going to get to my exam tomorrow.Once that's done i can get a swappa and spend hours finding the problem but i suppose i'll have to see if i can find it tonight while "studying"

[Sniper]

yeh that was my thinking. Does anyone know of that sray in stuff you put on the plug and then reconnect them so they make a good connection.

Try CRC electrical cleaner. Also, you might want to have a check on fuel filter and such if your bike has one, I believe a dirty one can cause problems

[toads]

hey there aff-man, I know all about what a pain in the ass electrical intermittent problems are, check your ht leads and the feed wires to the coils also. Caleb had this problem with his bike once, they can vibrate loose over time, nip up the connectors and buy some crc electrical contact cleaner. I think your ht leads are new aren't they?, if memory serves me right.

[aff-man]

HT leads???? sorry for being a dumbass but what be them??

[aff-man]

Just about to strip the old gal. . Hahahaha will check all leads and connections and then some. (great procrastination for exam study). Hopefully find the fault.

[Yamahamaman]

What is the condition/age of the battery. My ZZR400 had similar symptoms. New battery fixed it.

[aff-man]

What is the condition/age of the battery. My ZZR400 had similar symptoms. New battery fixed it.

Nope battery seems fine and if it was the batteryi am sure it wouldn't hold revs for a bit and cut out randomly

[Yamahamaman]

Nope battery seems fine and if it was the batteryi am sure it wouldn't hold revs for a bit and cut out randomly

It does however supply the voltage to your CDI. Hit the brakes, brake light comes on, suck volts from battery. Have it checked anyway.

[aff-man]

It does however supply the voltage to your CDI. Hit the brakes, brake light comes on, suck volts from battery. Have it checked anyway.

True hmmmmmmmmmmmmm will see i took all the connectors i could find apart fiddled the wires to make sure they are all secure and put em back seems to run but i have been mislead before.