CBR 250 won't start?

[tripod]

Hi,

I got my first bike just before the summer, was going great until i got dirty petrol from letting it go too far into the reseve tank and the battery was knacker so got it up and running again. Then today I had a small fall off it nothing major just went into a corner a little too quick and when I hit the brake the front wheel gave out. Anyway thought the bike would have been ok seems ok by looking at it but it won't start now. It's making that starting noise but not ticking over? There was a couple drop of liquid from just beside where the brake fluid is not sure what it is?

Any help would be much appreciate,

Thanks.

Not sure if this pic worked?


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[cork bikeboy]

you need to upload it as an attatchment bud
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that only works for pics that are already online

[Interceptor]

Could be anything - is the kill switch in the ON position? Is it attempting to start with the choke pulled?

Was it on its side for long when you dropped it?

'cptr

[tripod]

Thanks for the advice on the pics.
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Tried starting it with the choke pulled there no joy. It was only on its side for couple seconds raging now silly mistake. Think that fluild just came out of a breather type thing pretty sure nothing was broken.
cheers

[Interceptor]

Its an MC19 - pretty bullet proof really. Its something simple - did the fuel tap get turned off when it fell?

'c

[ow31]

Does it have a side stand switch? If so did it get damaged

[2buckledrims]

Oil in the airbox?

[chopper]

Originally Posted by Interceptor

Its an MC19 - pretty bullet proof really. Its something simple - did the fuel tap get turned off when it fell?

'c

yea right
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[chopper]

most likely its flooded, will prob start tomorrow, if not take out plugs and dry or replace them

[Interceptor]

Originally Posted by chopper

yea right
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Ah you only see the broken ones. I'd still buy one
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'c

[corkgsxr]

Originally Posted by chopper

most likely its flooded, will prob start tomorrow, if not take out plugs and dry or replace them

yep bastard to start if they run out of petrol or fall over.

i learned the hard way

id change the plugs anyway, chances are they havent been done in a long time. makes a big diff to them

[johnny b]

This is a post I have put up on the cbr250 site as alot of people get starting problems.

The most common thread posted on the old forum was "my bike wont start!"
Maybe this could be stickied so that people can do the simple checks first.




I am not a mechanic but i have some knoweledge of bikes.
This thread is for facts only, anything I have missed please add.
Anyting I have gotten wrong let me know and I will edit it.


The simple stuff.
KILL SWITCH!
Its a big red button on the right hand handlebar, make sure its on.

Is your fuel tap off? on? reserve? Try it on reserve if you are low on petrol.

Is the petrol old? if it is drain out the tank and refill with fresh petrol.

Sidestand switch? is your bike in nuetral, if it is in gear it will not start with the side stand down.

FUSES! Check all fuses!

ARE YOUR BATTERY CONNECTIONS TIGHT?

Can you push start it? Put bike in 1st gear with ignition on and run with it(or even better if you get a mate to push you) jump on and release clutch.
Give a little bit of throttle and make sure your on a clear road.

Check all earth connections on frame/engine etc.

If none of the above apply read on.


The basics for an engine to to go are fuel, spark and air.
One is always missing completley, lacking or getting/giving too much.
If you can determine which one is the problem then that makes things easier, if you cant it is a process of illimination.

SPARK

Is your spark weak?
If your bike is turning over but not starting your spark plugs may be not getting enough power or could be in need of replacement.
Buy a multi metre, they are cheap and will last a lifetime.
Your battery should be putting out about 12.5 volts when the bike is not on.
Charge it for a while and try and start it again if its lower than this.
If your battery keeps dying replace it, if you get the bike running and your battery keeps dying change the regulator rectifier.
Check this golden nuget from eclipze if you think if you think you are having batt/reg rec problems...
To view pics on this biker's forum - your post count must be 2 or greater.


To check if you are getting a spark take out a plug attached to the plug cap and touch the metal off the frame.
Hit the starter and check if you can see a blue spark.
WARNING!!! only hold the rubber plug cap and not the metal as you will fry yourself.

If you have the plugs out you may aswell replace them!
If your a cheap ass you may rub them down with sand paper or a wire brush. (or if you know they are relitivley new.)

TIP
If your bike is running on less than all four cylinders throw water on the header pipes and see which one doesnt steam off.

If you have replaced the spark plugs and you are still not getting spark replace the HT leads and or plug caps.

If that does not work Check the coils, replace the coils or get a friends coils to test and rule them in or out.

FUEL!

Are you getting fuel?
Is your fuel tap blocked? take off the fuel line from the tank and turn fuel on, if its not dripping out your tap is cloged up.

Are your fuel lines connected properly?

Is your fuel pump working? check with a mulitmeter if its getting power.

Clean your carbs! Clean your carbs! Clean your carbs!
CBRs carbs can get clogged up for many reasons restricting fuel.
Take the carbs apart one by one and use carb cleaner found in any auto shop.
You tube has some good carb cleaning vids.
Check there is no holes or tears in the diaframs (Black rubber nipple things), this can hinder running.
Make sure you clean the jets and put everything back exactly as you found it.
Count the amout of turns in on all idle screws etc.
Inspect the float heights.
Only use petrol resistant silicone to seal back up the carbs, I recomend a product called "indian gasket" go easy with it and its messy!

Thanks to K916 for this "how to clean your carbs write up"
To view pics on this biker's forum - your post count must be 2 or greater.


HAVE YOU FLOODED IT?
If you suspect you have flooded your bike, leave it for an hour and try again with no throttle!
If that doesnt work drain the carbs and try again.
If its still not working you may have hydrolocked your pistons, take a plug out and hit the starter for a second.
Put the plug back in and try again.

LASTLY make sure your carbs are on perfectly and tight!

If all that fails burn your bikeRolleyes thats a joke.

AIR

Is your air filter durty as hell? change if for a new one.
Make sure your airbox is on perfectly and tight.


MY BIKE DOES NOTHING WHEN I HIT THE STARTER, ZIP, NADDA, NOT A SOUND!
Check fuses.
Check battery connections.
Check relays.
Check for corrosion on the starter motor wires/connections.
Check starter button in switch gear for corrosion/connections.
Killswitch.
Sidestand.

Oh and Info from Studricho,
The main rule to starting a cbr (or any bike for that matter) is don't turn on the ignition until your ready to start the bike.

I've seen so many people turn the ignition on, then fiddle with gloves, then jacket, sit on bike, then forgot to put back pack on, then can't do up helmet with gloves on and then perform a 47 point safety check and decide to hit the starter button with kill switch on for at least 10 attempts.

Result

Battery has dropped in voltage and not enough to crank the engine quick enough, spark plugs fouled and no start.



This is the simple stuff covered.
Hope this helps a few people.
Good luck.Smile

And these bikes are bullet proof if serviced at the right intervils.

[mickeythemonkey]

Jump it off a cage, if it starts it's your battery
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[tripod]

Originally Posted by chopper

most likely its flooded, will prob start tomorrow, if not take out plugs and dry or replace them

looks like you were right, the plugs were flooded from yesterday. It started not problem today.

Thanks for all the posts!

[tripod]

Originally Posted by johnny b

This is a post I have put up on the cbr250 site as alot of people get starting problems.

The most common thread posted on the old forum was "my bike wont start!"
Maybe this could be stickied so that people can do the simple checks first.




I am not a mechanic but i have some knoweledge of bikes.
This thread is for facts only, anything I have missed please add.
Anyting I have gotten wrong let me know and I will edit it.


The simple stuff.
KILL SWITCH!
Its a big red button on the right hand handlebar, make sure its on.

Is your fuel tap off? on? reserve? Try it on reserve if you are low on petrol.

Is the petrol old? if it is drain out the tank and refill with fresh petrol.

Sidestand switch? is your bike in nuetral, if it is in gear it will not start with the side stand down.

FUSES! Check all fuses!

ARE YOUR BATTERY CONNECTIONS TIGHT?

Can you push start it? Put bike in 1st gear with ignition on and run with it(or even better if you get a mate to push you) jump on and release clutch.
Give a little bit of throttle and make sure your on a clear road.

Check all earth connections on frame/engine etc.

If none of the above apply read on.


The basics for an engine to to go are fuel, spark and air.
One is always missing completley, lacking or getting/giving too much.
If you can determine which one is the problem then that makes things easier, if you cant it is a process of illimination.

SPARK

Is your spark weak?
If your bike is turning over but not starting your spark plugs may be not getting enough power or could be in need of replacement.
Buy a multi metre, they are cheap and will last a lifetime.
Your battery should be putting out about 12.5 volts when the bike is not on.
Charge it for a while and try and start it again if its lower than this.
If your battery keeps dying replace it, if you get the bike running and your battery keeps dying change the regulator rectifier.
Check this golden nuget from eclipze if you think if you think you are having batt/reg rec problems...
To view pics on this biker's forum - your post count must be 2 or greater.


To check if you are getting a spark take out a plug attached to the plug cap and touch the metal off the frame.
Hit the starter and check if you can see a blue spark.
WARNING!!! only hold the rubber plug cap and not the metal as you will fry yourself.

If you have the plugs out you may aswell replace them!
If your a cheap ass you may rub them down with sand paper or a wire brush. (or if you know they are relitivley new.)

TIP
If your bike is running on less than all four cylinders throw water on the header pipes and see which one doesnt steam off.

If you have replaced the spark plugs and you are still not getting spark replace the HT leads and or plug caps.

If that does not work Check the coils, replace the coils or get a friends coils to test and rule them in or out.

FUEL!

Are you getting fuel?
Is your fuel tap blocked? take off the fuel line from the tank and turn fuel on, if its not dripping out your tap is cloged up.

Are your fuel lines connected properly?

Is your fuel pump working? check with a mulitmeter if its getting power.

Clean your carbs! Clean your carbs! Clean your carbs!
CBRs carbs can get clogged up for many reasons restricting fuel.
Take the carbs apart one by one and use carb cleaner found in any auto shop.
You tube has some good carb cleaning vids.
Check there is no holes or tears in the diaframs (Black rubber nipple things), this can hinder running.
Make sure you clean the jets and put everything back exactly as you found it.
Count the amout of turns in on all idle screws etc.
Inspect the float heights.
Only use petrol resistant silicone to seal back up the carbs, I recomend a product called "indian gasket" go easy with it and its messy!

Thanks to K916 for this "how to clean your carbs write up"
To view pics on this biker's forum - your post count must be 2 or greater.


HAVE YOU FLOODED IT?
If you suspect you have flooded your bike, leave it for an hour and try again with no throttle!
If that doesnt work drain the carbs and try again.
If its still not working you may have hydrolocked your pistons, take a plug out and hit the starter for a second.
Put the plug back in and try again.

LASTLY make sure your carbs are on perfectly and tight!

If all that fails burn your bikeRolleyes thats a joke.

AIR

Is your air filter durty as hell? change if for a new one.
Make sure your airbox is on perfectly and tight.


MY BIKE DOES NOTHING WHEN I HIT THE STARTER, ZIP, NADDA, NOT A SOUND!
Check fuses.
Check battery connections.
Check relays.
Check for corrosion on the starter motor wires/connections.
Check starter button in switch gear for corrosion/connections.
Killswitch.
Sidestand.

Oh and Info from Studricho,
The main rule to starting a cbr (or any bike for that matter) is don't turn on the ignition until your ready to start the bike.

I've seen so many people turn the ignition on, then fiddle with gloves, then jacket, sit on bike, then forgot to put back pack on, then can't do up helmet with gloves on and then perform a 47 point safety check and decide to hit the starter button with kill switch on for at least 10 attempts.

Result

Battery has dropped in voltage and not enough to crank the engine quick enough, spark plugs fouled and no start.



This is the simple stuff covered.
Hope this helps a few people.
Good luck.Smile

And these bikes are bullet proof if serviced at the right intervils.

Few good tips there, I'll Keep them in mind.
To view pics on this biker's forum - your post count must be 2 or greater.