Funny problem starting and cutting out

[pintlicker]

Hi, I wonder if any of you have any ideas on what may be causing this? 


I've been running my 99 FZS600 throughout the winter with no issues but in the last week I've noticed that there has been a funny problem starting.  Intermittently it decides that it won't fire when I first press the starter button, it usually does on the second or third try with no problems.  That issue hadn't really been bothering me too much as it always started, but I popped out on it at lunchtime and on the way back the engine just died.  I pulled over to the side and it started again on the second or third push of the starter. 


I'm off tomorrow but ideally id like to work out what might be causing this over the weekend.  The problem is that it doesn't happen consistently, most of the time it will fire first time and its never cut out on me before today.


My primary suspect is the spark plugs, I had them out last year for a clean when I was servicing the bike but it may have been a few years since I've replaced them but I'm not sure that would have caused the bike to cut out.  Other than that would I be looking at fuel pump, coil,[/size] [/size]cut off switch and ignition switch as the next likely suspects?Anything else I'm missing?thanks
Stuart[size=small]

[ChristoT]

Hi, I wonder if any of you have any ideas on what may be causing this? 


I've been running my 99 FZS600 throughout the winter with no issues but in the last week I've noticed that there has been a funny problem starting.  Intermittently it decides that it won't fire when I first press the starter button, it usually does on the second or third try with no problems.  That issue hadn't really been bothering me too much as it always started, but I popped out on it at lunchtime and on the way back the engine just died.  I pulled over to the side and it started again on the second or third push of the starter. 


I'm off tomorrow but ideally id like to work out what might be causing this over the weekend.  The problem is that it doesn't happen consistently, most of the time it will fire first time and its never cut out on me before today.


[size=1em]My primary suspect is the spark plugs, I had them out last year for a clean when I was servicing the bike but it may have been a few years since I've replaced them but I'm not sure that would have caused the bike to cut out.  Other than that would I be looking at fuel pump, [/size]coil,cut off switch and ignition switch as the next likely suspects?Anything else I'm missing?thanks[size=1em]Stuart[/size]

Cleaning up all the connectors and changing the sparkies won't hurt.

Is your battery healthy (for the starting)? When were the carbs last cleaned?

Oh, and welcome! 

[Lawrence]

If it's just cutting out like you hit the killswich I'd start by looking at electrical connections, ignition barrel etc.  I'd have thought if it was fuel it'd gradually die rather than just stop.

[fazersharp]

Dont know about the just cutting out issu but a while back I had starting issues so took out the sparks checked gap - cleaned and put back and still the same I then changed them for new and all was good again. Bike had done 15k on them

[pintlicker]

[size=1em]Thanks for that.  The battery has been fine it turns the starter motor quickly.  I'll check with a multimeter tonight but it was replaced at the beginning of last year I think.  It strikes me more as an electrical issue as well as it just died, if it was fuel starvation I would have expected it to splutter to a halt.[/size]

Carbs haven't been cleaned in a while, possibly a few years.  Would this cause this type of issue though?

Last month I stripped down the r/h handlebar controls and cleaned up the starter button contacts as I had to wiggle the starter button a bit to fire the starter.  It is possible I might have hit something else there as well.  The ignition barrel is a bit worn anyway, or it might just be the key, I usually need to give it a wiggle to get it to turn.  The green ignition light on the dash never went out when it stopped though, could that still be an issue?

I did fit a pair of R&G heated grips a couple of months ago, and wired to the fuse box.  Could that potentially cause any problems?

I've ordered some plugs to try that as well, the bikes done around 15k on mine as well I think.


I've got an arse puckering 20 mile ride home on the M8 to get through first though!  Not looking forward to it.

[ChristoT]

Carbs haven't been cleaned in a while, possibly a few years.  Would this cause this type of issue though?

I doubt it, but can't hurt. In the OP, you weren't specific as to HOW it died.

Last month I stripped down the r/h handlebar controls and cleaned up the starter button contacts as I had to wiggle the starter button a bit to fire the starter.  It is possible I might have hit something else there as well.  The ignition barrel is a bit worn anyway, or it might just be the key, I usually need to give it a wiggle to get it to turn.  The green ignition light on the dash never went out when it stopped though, could that still be an issue?

The green ingition light - do you mean the neutral light? If that's the case, you have a bike with a loom that's been buggered about!

I did fit a pair of R&G heated grips a couple of months ago, and wired to the fuse box.  Could that potentially cause any problems?

Has it blown any fuses?

I've got an arse puckering 20 mile ride home on the M8 to get through first though!  Not looking forward to it.

Stay in the inside lane, and be prepared to dive for the hard shoulder if it dies on you. And good luck!

[fazersharp]

Last month I stripped down the r/h handlebar controls and cleaned up the starter button contacts as I had to wiggle the starter button a bit to fire the starter.

Why didnt you say that in the first place, that is where I would look for the cutting out

[ChristoT]

Last month I stripped down the r/h handlebar controls and cleaned up the starter button contacts as I had to wiggle the starter button a bit to fire the starter.

Why didnt you say that in the first place, that is where I would look for the cutting out

I can't see the starter button being dodgy affecting the running once the engine is already running...  :pokefun

[pintlicker]

I was thinking more of the cutoff switch on the controls, just incase I've done something to the wiring when I've been around the ignition switch. 
I just checked and I'm talking pish about the light.  I must have put it into neutral after it died before I fired it up again.  :rolleyes

The grips are still working so the fuse must be ok on them. 

I'm probably going to stay off the motorway tonight I think, just take my time though the towns and back roads on the way back.  A couple of dodgy places where there's no hard shoulder that I really don't fancy being stuck on. 

The plugs should hopefully be there sat, but the plan of attack tonight is to whip out, check and clean the ones that are in it at the moment.  Then I'll get busy with the multimeter and see if I can find any dodgy connections in the ignition or cutoff switch wires. 

Are there any good guides about for cleaning the carbs around?  Its been a while since I've got down and dirty with them.

thanks for your help

[fazersharp]

I was thinking more of the cutoff switch on the controls, just incase I've done something to the wiring when I've been around the ignition switch. 

That is what I ment in my post so not the starter switch per-say but somthing has beed disturbed as there is a kill switch over there

[ChristoT]

I was thinking more of the cutoff switch on the controls, just incase I've done something to the wiring when I've been around the ignition switch. 

That is what I ment in my post so not the starter switch per-say but somthing has beed disturbed as there is a kill switch over there

Ah, gotcha now, sorry!

[clayt74]

I had similar issues, quickly discovered a loose battery terminal.
Start with the simplest things first.
Good luck

[fazersharp]

I had similar issues, quickly discovered a loose battery terminal.
Start with the simplest things first.
Good luck

Im stupid -- but do you need the battery once its running

[clayt74]

[quote author=clayt74 link=topic=11524.msg124162#msg124162 date=1391103696]
I had similar issues, quickly discovered a loose battery terminal.
Start with the simplest things first.
Good luck

Im stupid -- but do you need the battery once its running
[/quote]

Yes the battery supplies the coils that produce the spark! The generator only supplies the regulator that charges the battery.
Try it?

[fazersharp]

I told you I was stupid

I would check your battery connections

[pintlicker]

Think I've worked it out, got the bike home and started fiddling with controls and wiring.  Found out it would stop whenever I fiddled with the ignition switch so I'm pretty sure thats the culprit. 


Are the replacement ones from wemoto and MandP good quality or is it worth going for a yamaha replacement?

[wickedmonkey]

Think I've worked it out, got the bike home and started fiddling with controls and wiring.  Found out it would stop whenever I fiddled with the ignition switch so I'm pretty sure thats the culprit. 


Are the replacement ones from wemoto and MandP good quality or is it worth going for a yamaha replacement?

Up until this post, I was convinced it would turn out to be your kickstand switch...

[darrsi]

Think I've worked it out, got the bike home and started fiddling with controls and wiring.  Found out it would stop whenever I fiddled with the ignition switch so I'm pretty sure thats the culprit. 


Are the replacement ones from wemoto and MandP good quality or is it worth going for a yamaha replacement?

When you say 'ignition switch' that normally means where you put the key into, is that correct or do you mean the controls on the handlebars?


http://www.fazerspares.com/items/127-1_8...t-hand.htm


http://www.ebay.co.uk/sch/i.html?_odkw=s...0&_sacat=0

[pintlicker]

Sorry, I wasn't clear.  When I pretty much even touched the key, or knocked the ignition barrel the bike cut out every time i tried it so I'm going to start with that.  When the bike cut out I was going through a road that was getting resurfaced so there was a few bumps around so that makes sense.  I tested the R/H switchgear thoroughly with a multimeter and it was all working as it should and there didn't seem to be any dodgy connections. 


I ended up just getting one from m and p on ebay, fingers crossed it'll be in on monday/tuesday hopefully.  It'll be fun getting the bugger out though, looks a bit tricky with the anti tamper bolts.


The rest of the bike needs a bit of a tidy up, its been doing a fair amount of miles recently with the mildish weather.  I'll give it a service in the next couple of weeks, the inlet rubbers also need replacing and I might as well do the carbs while i'm in and around that area as well.


Thanks for your help


Stu

[Lumpy]

[quote author=fazersharp link=topic=11524.msg124165#msg124165 date=1391104259]
[quote author=clayt74 link=topic=11524.msg124162#msg124162 date=1391103696]
I had similar issues, quickly discovered a loose battery terminal.
Start with the simplest things first.
Good luck

Im stupid -- but do you need the battery once its running
[/quote]

Yes the battery supplies the coils that produce the spark! The generator only supplies the regulator that charges the battery.
Try it?
[/quote]and the battery is connected to the electrics. If you think about it you will realise you are wrong