Curvy starting troubles.
 

Gm Peeps,

After any pointers you more knowledgeable members can give me to why the bike won't start.

Yesterday Morning, took off the cover, she lives outside at the mo, moved round to front and started her up, No problems first time and left ticking over to warm whilst i checked tyre pressures.

Bike then turned off after approx 5 mins, went inside to get gear on, go outside, restart bike, again, no Problem, left running whilst finishing my ciggie.

Sat on bike ready to put helmet on and rev's start to drop, so apply a little choke, Bike cut's out and hasn't started since!

Had a issue a few weeks back, carbs were stripped and balanced, also had a low battery prob and after a charge it's been running fine, so went a purchased a new Yuasa ytz14s battery, thinking this times it gone, but still won't have any of it.

Took tank off and cleaned out the strainer, and a look and wriggled a few wires about as I'm not a tech person.

Only things i can think off that may assist in diagnostics, Bike got wet a few days ago and the fuel light came on, only to point of flashing and rode for about 4 miles.

Bike turns over quite well and attempts to fire at first, but then Nothing.

Rob.

Re: Starting issuse.
 

if the plugs had got wet it can stop them firing, but as it was a while ago and its very hard to get the back cylinder wet i doupt that is your problem, and id stick some fuel in it just to be on the safe side.......

Re: Starting issuse.
 

I have fueled he bike, got wet Tuesday, Rode briefly on Thursday, when it was fueled and then parked.

Thanks anyway.

Rob.

Re: Starting issuse.
 

Rag and a Match vastly becoming a serious contender as a remedy :D

Rob

Re: Curvy starting troubles.
 

Well, first I always recommend that you don't leave a bike (or any engine come to that) idling for prolonged periods "to warm up". It's not particularly good for the engine, it's spending a long time at the worst conditions (cold/part warm). Just start it, let it settle for 30sec or so to be able to ease most of the choke off, then ride away gently.

Having been running for quite a while, putting any choke back on will have quite possibly fouled the plugs. If so, it will be unlikely to start (carbon fouling simply conducts the electricity and the voltage never gets high enough to spark). That may be recoverable by removing the plugs and cleaning them or heating over a flame, alternatively fit some new ones. Plugs need to get to around 300C or so at the centre electrode to self-clean.

Once properly warmed up the idle speed should be around 13-1400rpm, what does yours idle at normally? If it's low then it can easily tend to stall.

Re: Curvy starting troubles.
 

Usual idle is around 1100 -1200, but doesn't usually stall, it was just this occasion.

Just a note, it runing with Iridium plugs, if that has any bearing

Just a note, it's running with Iridium plugs

Previously had a stalling problem, but that hasn't happened since the battery was charged, to be honest it's been running a dream.

Popped the rear plug out this afternoon and it was black, didn't look bad in any way other than the end was black and a little wet.

Rob.

Re: Curvy starting troubles.
 

Theres your problem,black plugs.Get them both out,clean them up and try to avoid using the choke as much as poss.You also need to check the choke plungers on the carbs to make sure they are not sticking.Then as above,get on the bike and ride it rather than letting it idle.

Re: Curvy starting troubles.
 

Cheers Biggles,

Will replace them with a new set and try them.

Rob.

Re: Curvy starting troubles.
 

Update and Remedy.

Esso fuel,

Dropped the tank and cloudly weak smelling petrol, thanks to a mate who's tweaked and fettled she's now singing again.

Thanks to all who offered advice and possible solutions.

Regards

Rob.