New bike often stalls when pulling clutch

[Jack85]

Not sure if this is a mechanical/electrical/rider problem.

I'm a new rider and just got my new new to me Yamaha Scorpio 225. When I am riding in th cold (usually on a night, although I've only had the bike a week) and pull my clutch to change gears, sometimes the bike stalls. I can't find a pattern to when it does it apart f Om it seems to happen more at night and doesn't seem to do it when I ride it in the middle of the day or morning.

It happened 2 or 3 times tonight in a 15 minute ride home from work.

It stalls when the clutch is fully pulled so I don't think it's me that's stalling the bike. I loose all power and the engine turns off. It usually happens if I pull the clutch back for longer than usual.

Not sure if it's related but the dipped headlights don't work, only the main beam so I always ride around with my main beam on, and when I increase the revs the light b comes brighter.

Can anyone think of any possibilities?

Thanks

[FJRider]

Will it idle when parked .. ???

[Honest Andy]

Hmmm. That's a curly one. If someone else can't give you a better/quicker solution then here's what I reckon:
Your bike has been in a crash and had the headlight replaced. No problem :niceone:. Every leaners bike gets dropped sooner or later :doh:. BUT there's lots of wires and plugs inside the headlight, where they connect all the wires from different parts of the bike. There may be wires controlling the ignition, starter motor, clutch interlock, kill switch, etc. Not to mention the headlight bulb, headlight switch, high/low beam switch. I reckon somebody mucked up the wiring connections when they replaced the headlight :brick:, or perhaps some connector or other has fallen apart. It only needs one wire out of place :confused:
Buy a manual with a wiring diagram and check all the connections you can find and make sure the colours are right. It'll take a while but that's what I reckon.

[Jack85]

I've only had it a week and each time I've ridden it so bad to use choke to start it but it does idle with the choke on, but then when I let the choke out it sometimes cuts out.

It doesn't cut out a lot when I'm riding it, like stationary at lights or waiting to turn, just sometimes does when I hold the clutch in. (Disengaged correct?)

[Jack85]

Hmmm. That's a curly one. If someone else can't give you a better/quicker solution then here's what I reckon:
Your bike has been in a crash and had the headlight replaced. No problem :niceone:. Every leaners bike gets dropped sooner or later :doh:. BUT there's lots of wires and plugs inside the headlight, where they connect all the wires from different parts of the bike. There may be wires controlling the ignition, starter motor, clutch interlock, kill switch, etc. Not to mention the headlight bulb, headlight switch, high/low beam switch. I reckon somebody mucked up the wiring connections when they replaced the headlight :brick:, or perhaps some connector or other has fallen apart. It only needs one wire out of place :confused:
Buy a manual with a wiring diagram and check all the connections you can find and make sure the colours are right. It'll take a while but that's what I reckon.

I wouldn't be able to do that, it's far above my ability. I have the original owners manual but that doesn't seem to have it in. I presume a Yamaha dealer could advise me more?

[Jack85]

It happens tonight 2 mins into my journey and later at 10 mins into my journey so the engine would be warmed up by 10 mins of riding...

[Honest Andy]

I wouldn't be able to do that, it's far above my ability.

"Ah come on mate, you'll be right...
Hey Jonesy! Give us a hand with a job on Saturday!"

[ellipsis]

...plugs, carburetor...

[Autech]

Will it start without the clutch in? Some bikes have a switch which wont allow you to start the bike unless the clutch is in, could it be a problem with that KB gurus? I know the sidestand switch on my ho bag used to kill the engine when I was mid corner at full lean :gob:

[Banditbandit]

I've only had it a week and each time I've ridden it so bad to use choke to start it but it does idle with the choke on, but then when I let the choke out it sometimes cuts out.

It doesn't cut out a lot when I'm riding it, like stationary at lights or waiting to turn, just sometimes does when I hold the clutch in. (Disengaged correct?)

That sounds like more of a carb problem. When you have the clutch in you will also have the throttle shut down - well usually - it may be a carb issue that causes the bike to lose power and the engine die.

I'm not that familiar with the carbs on those things, but I would be looking for a jet that is set badly, so that when you shut off the throttle it completely cuts the fuel to the engine.

[Autech]

That sounds like more of a carb problem. When you have the clutch in you will also have the throttle shut down - well usually - it may be a carb issue that causes the bike to lose power and the engine die.

I'm not that familiar with the carbs on those things, but I would be looking for a jet that is set badly, so that when you shut off the throttle it completely cuts the fuel to the engine.

Partially blocked pilot jet maybe?

[Rhys]

What rev's does it idle at when warm ?
When you put the bike in to first do the revs drop?

[Asher]

Sounds like the idle is set too low. It should be around 1500 rpm when warm.

The headlight issue is probably just a burnt out filiment. Pull the bulb out and check to see if the little coils aren't burnt or broken

[nodrog]

Hmmm. That's a curly one. If someone else can't give you a better/quicker solution then here's what I reckon:
Your bike has been in a crash and had the headlight replaced. No problem :niceone:. Every leaners bike gets dropped sooner or later :doh:. BUT there's lots of wires and plugs inside the headlight, where they connect all the wires from different parts of the bike. There may be wires controlling the ignition, starter motor, clutch interlock, kill switch, etc. Not to mention the headlight bulb, headlight switch, high/low beam switch. I reckon somebody mucked up the wiring connections when they replaced the headlight :brick:, or perhaps some connector or other has fallen apart. It only needs one wire out of place :confused:
Buy a manual with a wiring diagram and check all the connections you can find and make sure the colours are right. It'll take a while but that's what I reckon.

Or you could just turn the idle up.

[FJRider]

I've only had it a week and each time I've ridden it so bad to use choke to start it but it does idle with the choke on, but then when I let the choke out it sometimes cuts out.

It doesn't cut out a lot when I'm riding it, like stationary at lights or waiting to turn, just sometimes does when I hold the clutch in. (Disengaged correct?)


Or you could just turn the idle up.



Listen to this guy. Two minutes with a screwdriver will sort it.

If you don't know where the idle screw is on your bike ... google it.

SIMPLE things first.

[FJRider]

Sounds like the idle is set too low. It should be around 1500 rpm when warm.

The headlight issue is probably just a burnt out filiment. Pull the bulb out and check to see if the little coils aren't burnt or broken

As you say (in my opinion too) ... two different issues.

Easiest check method is to change bulbs.

[Jack85]

Listen to this guy. Two minutes with a screwdriver will sort it.

If you don't know where the idle screw is on your bike ... google it.

SIMPLE things first.

I've got the owners manual and have found out how to alter idle so I'll have a look at the weekend. The previous owner said he tried replacing the bulb but the connection seemed like it didn't have enough 'contact' to stay on. When he pressed it in it worked but then left go and it wouldn't work.

[FJRider]

I've got the owners manual and have found out how to alter idle so I'll have a look at the weekend.

Set the idle when it's warmed up. Much easier to do.


The previous owner said he tried replacing the bulb but the connection seemed like it didn't have enough 'contact' to stay on. When he pressed it in it worked but then left go and it wouldn't work.

As I recall ... the bulb for those has three lugs and two contact points. Check you have the correct bulb and correctly seated. It will need to be pushed in to the receiver and rotated slightly. (Clockwise I think)

Don't touch the bulb with your bare hands.

[Jack85]

Set the idle when it's warmed up. Much easier to do.



As I recall ... the bulb for those has three lugs and two contact points. Check you have the correct bulb and correctly seated. It will need to be pushed in to the receiver and rotated slightly. (Clockwise I think)

Don't touch the bulb with your bare hands.

Thanks for the reply! The ifle was at around 1.5k when it was warm, and when I rode it today in the cold it didn't stall once, which makes me wonder why it seems to stall only when it's dark?! Maybe mi bike is scared of the dark?? (Pussy!). I'll have a look tonight if it stalls, hopefully not.

I wonder if there are any service manuals online for the Scorpio?

[FJRider]

Thanks for the reply! The ifle was at around 1.5k when it was warm, and when I rode it today in the cold it didn't stall once, which makes me wonder why it seems to stall only when it's dark?! Maybe mi bike is scared of the dark?? (Pussy!). I'll have a look tonight if it stalls, hopefully not.

I wonder if there are any service manuals online for the Scorpio?

Go for it ...

http://tebp.info/E/P/YAMAHA~SCORPIO~225~SERVICE~REPAIR~PDF~MANUAL~2006~ 2013.PDF

[Jack85]

Go for it ...

http://tebp.info/E/P/YAMAHA~SCORPIO~225~SERVICE~REPAIR~PDF~MANUAL~2006~ 2013.PDF

Interestingly on my ride home tonight I couldn't get it to stall how it did a few nights ago. Tired dipping clutch for a while while going fast and that didn't, so I have no idea why it did the other few times.

I'm not able to download that as a PDF, it won't let me create an account, it's blocked. Do you have it as a PDF please?

[FJRider]

Interestingly on my ride home tonight I couldn't get it to stall how it did a few nights ago. Tired dipping clutch for a while while going fast and that didn't, so I have no idea why it did the other few times.

Any number of reasons why ...


I'm not able to download that as a PDF, it won't let me create an account, it's blocked. Do you have it as a PDF please?

Your bike ...you google it.

[Honest Andy]

So it happens when the bike isn't warmed up properly? On a cold night?
I still think you need to remove the entire wiring loom and all of the components and spread them out on the lounge floor.
All in the name of knowledge of course

Then you'll have a REAL problem...

[Blat450]

Thanks for the reply! The ifle was at around 1.5k when it was warm, and when I rode it today in the cold it didn't stall once, which makes me wonder why it seems to stall only when it's dark?! Maybe mi bike is scared of the dark??

Night time = headlight on. Does it still play up with the headlight off?

The problem is fanging around in the dark with the headlight off may cause more problems than just the stalling :facepalm:

[FJRider]

Night time = headlight on. Does it still play up with the headlight off?

The problem is fanging around in the dark with the headlight off may cause more problems than just the stalling :facepalm:

DAYLIGHT= headlight ON. It's required by law now ... remember.

[Jack85]

My dipped lights don't work well at all so I always use full beam day and night. Rather be seen than not seen

[awayatc]

My dipped lights don't work well at all so I always use full beam day and night. Rather be seen than not seen

Don't be a prick , riding with high beam all the time.
Fix your bloody light.....
How hard can it be?