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snikks |
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snikks Spanner Monkey
Joined: 15 Jan 2011 Karma :
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Posted: 10:58 - 18 Nov 2011 Post subject: Bike won't start/cuts out |
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Hi All,
So, I head out to the garage this morning, give the bike a swift check-over, unlock it and wheel it out. Choke on, start it up, and leave it to warm whilst I get the rest of my kit on.
The bike was idling at around 2k rpm, which is fairly normal for with the choke on, usually struggles a little then as it warms gradually reaches 3k rpm, at which point I can choke off and ride, taking it a little easy at first of course. Not today however, I turned to put my helmet on, turned back and the bike had cut out. At this point it'd been running for probably a minute.
So I go to restart it, nothing, the starter sounds to be turning it fine, but it won't catch. Try switching it off and on again (can you tell I'm used to working with computers?) no difference.
After prolonged testing, I can verify that the bike will start and turn over a few revolutions before cutting out if I:
Turn the ignition on, turn the choke on, don't touch the throttle, and press the starter. This gets me about 2-3 seconds.
Turn the ignition on, leave choke off, give a little throttle and press the starter - the bike will start and by giving more throttle I can keep it going longer, about 4-5 seconds up to about 2k rpm, before it will again cut out.
All the facts I can think of to list are:
When I first turn the ignition on there is a small "buzz" sound that I'd never worried about. However this seems a little louder than normal to me.
The engine when it does run, sounds "clunkier" is the best way I can put it. Not smooth like normal at all.
The oil level looks okay (although the oil is a little dark, I'd been procrastinating changing it).
The coolant level looks ok although I can't see it hugely well without taking a side-panel off. I did have a problem with my radiator leaking that I previously posted about, but that seems to be solved and the point that was leaking before is definitely dry.
I've tried flicking the sidestand up and down, and changing the gears out of and back into neutral.
I haven't tried to bump it, as my driveway opens directly onto a busy main road, so there's not really any space to do so.
The battery seems ok to me, as far as can be told without a multi-meter. The same thing happens with the headlights completely off.
Here's hoping one of you wise bods can point me in the right direction.
Edit: This SEEMS to be fixed now - cleaned up the end of the fuel tank breather as it was caked in road gunk, and opened/closed the tank to check petrol level by eye (just in case gauge was faulty), fired it up again and it started perfectly, just as normal. Took it out for a little ride, just up/down the street as I'm supposed to be working from home due to my broken bike today. Fingers crossed that's nailed it and it was just a minor blockage at the end of the breather. ____________________ - CBT: 02/01/11 Theory: 26/04/11 Mod 1: 19/05/11 Mod 2: 19/08/11
- 2007 Honda XL125V Varadero (Sold), 1999 Yamaha FZS600 Fazer (Sold), 2001 CBR600F |
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CEDR |
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CEDR Two Stroke Sniffer
Joined: 07 Jul 2011 Karma :
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bazablue |
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bazablue Renault 5 Driver
Joined: 27 Jun 2011 Karma :
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Posted: 05:50 - 21 Nov 2011 Post subject: Re: Bike won't start/cuts out |
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a simple thing ..if your petroll cap has a good seal then when after a run or big change in weather temp a vaccuum can be created therefore the carb wouldnt refill...was once a common prob on brit cars...remove cap and release vac u may hear a pop/suck noise....as per blocked breather(which is why you have one)..if I dont start its always the first thung I do and as for the other reply,,,winters coming,if in doubt sling yer battery,not worth plaing with,if good put on trickle charge once a week AND check electrolyte level weekly!!!!! snikks wrote: | Hi All,
So, I head out to the garage this morning, give the bike a swift check-over, unlock it and wheel it out. Choke on, start it up, and leave it to warm whilst I get the rest of my kit on.
The bike was idling at around 2k rpm, which is fairly normal for with the choke on, usually struggles a little then as it warms gradually reaches 3k rpm, at which point I can choke off and ride, taking it a little easy at first of course. Not today however, I turned to put my helmet on, turned back and the bike had cut out. At this point it'd been running for probably a minute.
So I go to restart it, nothing, the starter sounds to be turning it fine, but it won't catch. Try switching it off and on again (can you tell I'm used to working with computers?) no difference.
After prolonged testing, I can verify that the bike will start and turn over a few revolutions before cutting out if I:
Turn the ignition on, turn the choke on, don't touch the throttle, and press the starter. This gets me about 2-3 seconds.
Turn the ignition on, leave choke off, give a little throttle and press the starter - the bike will start and by giving more throttle I can keep it going longer, about 4-5 seconds up to about 2k rpm, before it will again cut out.
All the facts I can think of to list are:
When I first turn the ignition on there is a small "buzz" sound that I'd never worried about. However this seems a little louder than normal to me.
The engine when it does run, sounds "clunkier" is the best way I can put it. Not smooth like normal at all.
The oil level looks okay (although the oil is a little dark, I'd been procrastinating changing it).
The coolant level looks ok although I can't see it hugely well without taking a side-panel off. I did have a problem with my radiator leaking that I previously posted about, but that seems to be solved and the point that was leaking before is definitely dry.
I've tried flicking the sidestand up and down, and changing the gears out of and back into neutral.
I haven't tried to bump it, as my driveway opens directly onto a busy main road, so there's not really any space to do so.
The battery seems ok to me, as far as can be told without a multi-meter. The same thing happens with the headlights completely off.
Here's hoping one of you wise bods can point me in the right direction.
Edit: This SEEMS to be fixed now - cleaned up the end of the fuel tank breather as it was caked in road gunk, and opened/closed the tank to check petrol level by eye (just in case gauge was faulty), fired it up again and it started perfectly, just as normal. Took it out for a little ride, just up/down the street as I'm supposed to be working from home due to my broken bike today. Fingers crossed that's nailed it and it was just a minor blockage at the end of the breather. |
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bazablue |
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bazablue Renault 5 Driver
Joined: 27 Jun 2011 Karma :
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Posted: 05:50 - 21 Nov 2011 Post subject: Re: Bike won't start/cuts out |
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a simple thing ..if your petroll cap has a good seal then when after a run or big change in weather temp a vaccuum can be created therefore the carb wouldnt refill...was once a common prob on brit cars...remove cap and release vac u may hear a pop/suck noise....as per blocked breather(which is why you have one)..if I dont start its always the first thung I do and as for the other reply,,,winters coming,if in doubt sling yer battery,not worth plaing with,if good put on trickle charge once a week AND check electrolyte level weekly!!!!! snikks wrote: | Hi All,
So, I head out to the garage this morning, give the bike a swift check-over, unlock it and wheel it out. Choke on, start it up, and leave it to warm whilst I get the rest of my kit on.
The bike was idling at around 2k rpm, which is fairly normal for with the choke on, usually struggles a little then as it warms gradually reaches 3k rpm, at which point I can choke off and ride, taking it a little easy at first of course. Not today however, I turned to put my helmet on, turned back and the bike had cut out. At this point it'd been running for probably a minute.
So I go to restart it, nothing, the starter sounds to be turning it fine, but it won't catch. Try switching it off and on again (can you tell I'm used to working with computers?) no difference.
After prolonged testing, I can verify that the bike will start and turn over a few revolutions before cutting out if I:
Turn the ignition on, turn the choke on, don't touch the throttle, and press the starter. This gets me about 2-3 seconds.
Turn the ignition on, leave choke off, give a little throttle and press the starter - the bike will start and by giving more throttle I can keep it going longer, about 4-5 seconds up to about 2k rpm, before it will again cut out.
All the facts I can think of to list are:
When I first turn the ignition on there is a small "buzz" sound that I'd never worried about. However this seems a little louder than normal to me.
The engine when it does run, sounds "clunkier" is the best way I can put it. Not smooth like normal at all.
The oil level looks okay (although the oil is a little dark, I'd been procrastinating changing it).
The coolant level looks ok although I can't see it hugely well without taking a side-panel off. I did have a problem with my radiator leaking that I previously posted about, but that seems to be solved and the point that was leaking before is definitely dry.
I've tried flicking the sidestand up and down, and changing the gears out of and back into neutral.
I haven't tried to bump it, as my driveway opens directly onto a busy main road, so there's not really any space to do so.
The battery seems ok to me, as far as can be told without a multi-meter. The same thing happens with the headlights completely off.
Here's hoping one of you wise bods can point me in the right direction.
Edit: This SEEMS to be fixed now - cleaned up the end of the fuel tank breather as it was caked in road gunk, and opened/closed the tank to check petrol level by eye (just in case gauge was faulty), fired it up again and it started perfectly, just as normal. Took it out for a little ride, just up/down the street as I'm supposed to be working from home due to my broken bike today. Fingers crossed that's nailed it and it was just a minor blockage at the end of the breather. |
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stephen13 |
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stephen13 L Plate Warrior
Joined: 21 Nov 2011 Karma :
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Walloper |
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Walloper Super Spammer
Joined: 24 Feb 2005 Karma :
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stephen13 |
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stephen13 L Plate Warrior
Joined: 21 Nov 2011 Karma :
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Walloper |
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Walloper Super Spammer
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stephen13 |
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stephen13 L Plate Warrior
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