ignition cutsout after approx 10 mins (any ideas)

[rictus01]

the rear loom problem has been known for sometime and does cause weird problems (I suffered from it myself) so will be worth a try (rubbing on the rear subframe, check the inside of it) but I can't think of anything that would be time critical apaeart from thermal build up, this will normally be either fuel evaperation or electricl failure.

I'd start by taking off the airbox and leaving all the bolts out of the tank fixing, run the bike up (not riding it) and replicate the problem, when it cuts out, lift the tank and turn the engine over trying to start it, as you have no airbox fitted you'll be able to see the petrol and know that isn't your problem.

then remove one of the plugs (mind it will be hot), the rear is probably easiest and test for spark.

this should tell you which is causing the issue.

From there either a carb strip and clean, trace out the pipework and replace (also check the fuel tap diaphram), or electrical testing of the plugs/leads/coils & coil feed signals, wire tracing back to CDI unit.

if after all that you haven't found the problem the the CDI may have a fault, before sourcing a new one, try borrowing one from someone and see if that fixes it.

Hope that helps.

Cheers Mark.

thanks for all the advice guys i am now about to start fault finding i will update on outcome

hi everyone update as promised-took the seat front and rear off and all back end fairings off and checked all wiring but found no damage so i started the bike and waited for the ignition to cut out but it just kept running, after about twenty minutes i decided i'd better take it for a ride so i put the seat e.t.c back on and out i went armed with a can of freezer spray after about 10 mins the ignition cut out and after spraying the cdi and any other electrical components i could see to no avail as usual pushed it back home and it still would still not start.
the troubleshooting guide in manual mentions the turn signal/side stand relay could be the cause of a no or poor spark situation so i removed the seat and gave the relay a good blast with freezer spray and tried starting the bike suddenly it gave a massive backfire and started i then took it for a ride without bolting down seat so that when it conked out i could replicate the situation to verify that the problem is the relay only thing is the bike would not cut out so i am left wondering is it going to cut out totally out of the blue or did the backfire clear some debri that was blocking fuel

been out for another long ride and once again no cutting out anyone ever had this sort of thing happen . i suppose it will take a good few hours of riding for me to establish if the problem has gone away for good but it still leaves me on edge as to if it will suddenly come back any ideas as to what may have happened (check previous post see what happened)

[Biker Biggles]

You say it did'nt cut out when you left the seat bolts out?Back to chafed wiring loom,as a known fault is for the seat bolt to press on the loom when tightened up.
When my son's SV played up the loom looked ok but three wires were chafed inside and were earthing out intermittantly.Good hunting.

cheers biker biggles thats another avenue to explore if it happens again

well the problem went away for three days then today riding to work it conked out on me ,lifted saddle and wiggled loom in areas where bolts could press etc to no avail also i sprayed components with freezer spray in case of heat breakdown but no joy there either, after about 15 minutes just standing it started again and i carried on my way, this is the norm with this problem .when this happens i can operate starter but it just turns over and wont start if it was to do with the ignition cutout switch wiring then that should stop starter motor from turning over. if your out there biker biggles when your sons bike had wiring probs did just the ignition on both pots cutout or did you get all electrics failure (mine is just ignition ) also where on the bike did you find the fault

This may be worth a look.....

Is your fan kicking in when the engine gets over 100deg temp?
*or whatever it is on the curvey*

Not sure how the warnings work on the pre-03 but on the digital clocks you get a flashing temp indicator(easy to miss) and then a red light.(not so easily missed)

I only know as mine overheated during some slow speed riding recently and the fan was not working.

.....10mins standing would be about how long it takes for the(my) bike to overheat.....i've had to do it a few times now for fault finding

...quick check....take the plug off the lower rhs of your rad, put a wire between the two contacts(with ignition on but not necessarily started)...if the fan comes on then leave your bike running(with plug connected back to overheat sw on rad....) and see if it comes on or if your bike overheats and cuts out. If it doesnt come on during the "wire" check...replace the fuse, if it still fails..your overheat switch,or fan is most likely fubar or(fan) not getting power.

cheers james
i left the bike running on stand the other day to try and replicate the cutout problem and i heard the fan cut in but it would'nt cutout i then took it for a ride and hey presto it cutout

Have you checked your side stand cut out switch they some times fail it might be a damaged wire or full of crap!!! If you disconect it the bike will still run so go for a ride and see what happens!!!

ps It's located behind your side stand