CBR250RA won't start, turn over, or crank - Honda CBR250R Forum : Honda CBR 250 Forums
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post #1 of 87 Old 01-18-2016, 11:43 AM Thread Starter
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CBR250RA won't start, turn over, or crank

Hi all,

So I haven't been riding since the temperature started dropping and didn't have suitable gloves to keep riding. It's basically been in the "shop" for a couple months now, recently winterized, though.

Well, long story short, I had a friend swap out the chain for an RK Racing and finally got my -1 front sprocket and was pretty excited to try it out when the bad news came: the bike simply won't start!

It's done this before where it would start, stumble, and then die. Repeat several times and then it would run. It seems overall since acquiring in July that startup problems have progressively gotten worse and a little throttle would get it going but today, it won't even crank; all you here is the ignition or whatever but no stumbling.

Oil overfill might be possible (friend also did an oil change), and perhaps it is too cold. I almost wanted to just bring the bike indoors to warm it up and see if it would start. But recent Google searches have turned up results related to carburetor cleaning pretty consistently.

This video isn't of a CBR250 but it shows exactly what's happening to mine right now and the sound that you're hearing: https://www.youtube.com/watch?v=wwlw2ljGAkE

Is it possible that the carburetor is just clogged and that's what would cause this? Do I need to go on a DIY adventure with J2R?

Also, unrelated question, but how much do you think I could get for mine with around 8-9k miles on it? It's got ABS, a new rear tire (as of July), new RK racing chain, new sprockets. Just curious - might help with a down payment on a house if it's worth it.

Thanks!

The horse is prepared against the day of battle: but safety is of the Lord. [Proverbs 21:31]

Last edited by mbr; 01-18-2016 at 11:53 AM.
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post #2 of 87 Old 01-18-2016, 11:58 AM
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The CBR 250 is fuel injected and doesn't have a carb.
Are you sure you have enough juice in the battery?
Mine has problems starting up after winter storage too but i usually just have to give it a small amount of gas and plenty of tries to fire it up eventually.

My computer is fighting Aids and Cancer in it's idle time, and yours?
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post #3 of 87 Old 01-18-2016, 02:15 PM Thread Starter
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Quote:
Originally Posted by Schroeder View Post
The CBR 250 is fuel injected and doesn't have a carb.
Are you sure you have enough juice in the battery?
Mine has problems starting up after winter storage too but i usually just have to give it a small amount of gas and plenty of tries to fire it up eventually.
My CBR250 doesn't have a choke either otherwise I'd use it

It's been on a charger and the multimeter says ~14V sitting so we believe it's fully charged. Unless it's a bad battery and it will just say that until it tries to crank and then drains it completely.

You can feel a slight puff of the exhaust as it tries to start, but that's about it.

Any ideas?

The horse is prepared against the day of battle: but safety is of the Lord. [Proverbs 21:31]
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post #4 of 87 Old 01-18-2016, 05:15 PM
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I would check to see if there is even any spark or if it is just really dirty. I would also check to see if the ignition coils are working. Also, do you smell any gas vapors come out of the tail pipe when you try to start it? I imagine it has something to do with the ignition system. If the battery was bad and couldn't put out enough amps then it wouldn't even turn over. Same if the regulator went out.

And I know it sounds stupid but is there enough gas in the tank? Many times problems can cause by not thinking about the most obvious thing, trust me it happens

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post #5 of 87 Old 01-18-2016, 05:15 PM
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My first guess would be the battery too.
You say it was "recently winterized". Does that mean it sat for an extended period without being winterized?
If so untreated gas could have fouled the fuel injector.
Also when you winterized it, you did run it for a few minutes to make sure treated gas got through the fuel injector before you stored it, right?
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post #6 of 87 Old 01-18-2016, 05:54 PM
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agree battery or other related ignition factors..
also fuel, not necessarily the main problem
but could have hindered startup thus
compounded battery/spark problem..

would you buy a motorcycle
that wouldnt start or run...

ps check for air blockage by anything
loose under the seat, pieces of paper etc..

Last edited by shisoshin; 01-18-2016 at 05:55 PM. Reason: added ps
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post #7 of 87 Old 01-18-2016, 06:00 PM
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Check the battery voltage as you hit the button. I'm guessing it will drop off to nothing. 11V or so is in the normal range as you are cranking.

Probably needs a battery from the sound of it.
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post #8 of 87 Old 01-18-2016, 06:29 PM
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Maybe it's just long inactivity. I always need about 10 minutes of cranking (not continuously of course) and mild throttle application to get mine started after a few months in winter storage. Though I also don't use fuel stabilizer as that is a rare practice here.

My computer is fighting Aids and Cancer in it's idle time, and yours?
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post #9 of 87 Old 01-19-2016, 10:20 AM
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I would also check on voltage during the try, to start the engine. And minimum fill the tank to the top with fresh gas.

Quote:
Originally Posted by Schroeder View Post
....
I also don't use fuel stabilizer as that is a rare practice here.
Fill some 2 stroke oil in, before long standing periods
will stabilize the gas for quiet some time

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post #10 of 87 Old 01-19-2016, 06:39 PM
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Quote:
Originally Posted by Schroeder View Post
Maybe it's just long inactivity. I always need about 10 minutes of cranking (not continuously of course) and mild throttle application to get mine started after a few months in winter storage. Though I also don't use fuel stabilizer as that is a rare practice here.
I've stored my 2011 CBR250R using fuel stabilizer and a battery tender for 4 winters now, where it gets below freezing for weeks, if not months, at a time.
It ALWAYS starts on the first try every spring using only the start button.
(And I'm still using the original stock battery too.)
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