Funny problem starting and cutting out

[ChristoT]

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

Fixed, I take it? 

[Lumpy]

Check the multiplugs in the box under the tank, from the switches and the ignition switch ones. Mine had one corroded terminal feeding the ignition switch and was randomly cutting out

[neilr]

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]

[adasilva]

Hey Just throwing some wood on the fire here.
could it be the switch of the side stand fault. I heard someone had some issue with theirs and the bike was cutting out.
Just an idea!
good luck.

[darrsi]

[quote author=pintlicker link=topic=11524.msg124129#msg124129 date=1391096541]
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]

[/quote]


Not sure which part of this you wrote, but my bike had trouble starting a couple of days ago, then when it did i could instantly hear that it didn't sound right at all. I let it warm up for a bit then took it down to the end of my road but immediately came back and had to leave it at home as i had no time to persevere with it then.
It was suggested to me to change the plug caps, so i ordered the NGK ones again which are dirt cheap and delivered the next day, and i snipped a tiny amount off the ends of the HT leads again just to make sure they had a good connection to the plugs, plus i also drained the carbs as well.
Still no change.
So while it was lumpily ticking over i splashed water on the downpipes and noticed pipe #4 was not hot, to the point i could easily touch it with water on my gloves, whereas the other 3 pipes were boiling the water off immediately.


Turns out, after changing spark plug #4, it was a faulty plug.
Thing is, they were brand new NGK plugs bought off a car parts shop on Amazon 2 months ago.


Just something to note, my mechanic warned me a while back that plugs don't seem to have the same build quality that they used to, but even i was surprised at how quick this one pegged out!


Got me wondering about alternative plugs and stumbled on this site. Worth a look.


  http://www.sparkplug-crossreference.com/

[His Dudeness]

They could be fake NGK plugs https://www.driven2automotive.com/blog/w...gust-2017/

[darrsi]

They could be fake NGK plugs https://www.driven2automotive.com/blog/w...gust-2017/

Someone did mention that around the time i bought them, i did have a glance and they looked okay, although that's not to stop someone slipping a moody one in with a set of 4 to get rid of them?

[His Dudeness]

It's possible. The fakes look so good you'd be hard pressed to tell them apart from the genuine ones.

[darrsi]

It's possible. The fakes look so good you'd be hard pressed to tell them apart from the genuine ones.

Just glad i kept my Iridium plugs, i only changed them through doubt before.
Not had issues before with plugs, so bit of a curve ball really. They hide in plain sight, i was thinking i had a coil issue.