Hi guys! Motorcycle won't start :( - Honda CBR250R Forum : Honda CBR 250 Forums
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post #1 of 9 Old 02-06-2018, 07:07 PM Thread Starter
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Hi guys! Motorcycle won't start :(

Hey, Arizona CBR Rider here
I've been trying to troubleshoot my cbr250 that won't start, but I'm not very experienced with mechanical issues.
I recently replaced the battery (about 2 months ago) in order to transport the bike to my new house, and since then its been sitting in my garage. The other day I went to take it for a ride, and it wouldn't start. I changed the oil, and added some fresh fuel, but it is still acting the same.
Here is a quick video of the noises it makes, nothing sounds out of the ordinary to me but maybe you guys will catch something or recognize the issue.
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post #2 of 9 Old 02-07-2018, 01:05 AM
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Are you getting a spark? Removing the spark plug, re-inserting the plug in the cap, and holding the plug against the engine let's you check for spark.

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post #3 of 9 Old 02-07-2018, 02:09 AM Thread Starter
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I'll check for that in the morning. Thanks for the reply.
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post #4 of 9 Old 02-07-2018, 01:34 PM
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Is it just me, or does the fuel pump priming sound kind of "gritty"? Might just be the phone/camera audio, but it sounds a bit crucial towards the end of the priming cycle.

Also, since you moved and the bike has been sitting in the garage, check your airbox (in addition to spark of course). Sometimes mice get really crafty and build nests in there, blocking off the air needed to start. Seen it mentioned several times on this forum.

Once you've checked the airbox (and if it's all clear), spray some starting fluid into the intake and see if it spits over. That would indicate you have spark without having to dig into the 100 step checklist of parts removal to get to the plug itself and would indicate a potential fuel delivery problem.

Tis better to be thought a fool and remain silent, than to open one's mouth and remove all doubt.
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post #5 of 9 Old 02-07-2018, 04:24 PM
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Hi trickycbr.
When the bike has sat for longer time you might need to give it a little gas to start. I know that's unusual for a fuel injected bike but mine won't start after winter storage unless I give it some gas during cranking. Have a close eye on your RPM indicator. When you crank, slowly open the throttle, if you see movement on the RPM gauge you're close to the right spot. Give it a bit more or less until the engine comes to life.
Hope that helps.

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post #6 of 9 Old 02-07-2018, 06:23 PM Thread Starter
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Thanks for the replies guys, I'll try those things today and update if it works.
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post #7 of 9 Old 02-07-2018, 08:43 PM
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Starter sounds a little sluggish to me, especially on the 2nd attempt.
I think the battery is just low after sitting for 2 months and if you hooked it up to a trickle charger overnight it would start up fine.
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post #8 of 9 Old 02-07-2018, 11:56 PM
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@trickycbr ... did you fully charge that new battery after the acid pack was installed?
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post #9 of 9 Old 02-08-2018, 12:29 PM
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Yeah, I agree with MotoMike. This is definitely an instance where the principal of "ockham's razor" is appropriate.
If the battery was the last item you messed with, it should be the first place to start your troubleshooting.
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