Sometimes: engine stalls when downshifting to 1 while holding clutch - Honda CBR250R Forum : Honda CBR 250 Forums
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post #1 of 79 Old 06-01-2011, 02:17 PM Thread Starter
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Sometimes: engine stalls when downshifting to 1 while holding clutch

This happened couple of times to me - i was going to stop on the stop sign. Holding a clutch I was downshifting to 1 gear and breaking at the same time. When I stopped I realized that engine has quietly stalled and i had to start it again.
What could it be? I noticed this was happening only during first 5-10 minutes of riding. Maybe because it was cold?
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post #2 of 79 Old 06-01-2011, 02:28 PM
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Just make sure your clutch is adjusted correctly (no slack, but not overly tight) and put some miles on it. I had the same issue with another Honda a few years back. Just needed to be ridden, as the engine was "tight" until it was completely broken-in.
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post #3 of 79 Old 06-01-2011, 02:33 PM Thread Starter
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Thanks, i have just ~50 miles yet on my CBR - got it just last week from the dealer. That might be the reason.

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post #4 of 79 Old 06-01-2011, 11:45 PM
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Its a common thing, mine has done it about 10 times since new, its when you blip the throttle at low revs it'll stall, its the way the pgm-fi unit learning the "ropes", My CB400 09 model did the same when new for about 600-800 kms but is fine now.
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post #5 of 79 Old 06-02-2011, 01:16 AM
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dont think ive had that problem at all.ive only stall'd 2 times the first day i got the bike.900 miles now and havent stall'd
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post #6 of 79 Old 06-07-2011, 09:56 PM Thread Starter
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Took it to the dealer today. They were not able to reproduce it quickly and offered to leave the bike with them for the day. I told that will do at 600 mile service.
During today's quick check they did not find anything wrong with bike tuneup, but acknowledged that there might be an issue and reported it to Honda. Now we are waiting for response, maybe there are similar problems already reported.

For now i just release throttle more slow when pulling a clutch, that helps.

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post #7 of 79 Old 06-07-2011, 11:05 PM
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Quote:
Originally Posted by p4i1 View Post
This happened couple of times to me - i was going to stop on the stop sign. Holding a clutch I was downshifting to 1 gear and breaking at the same time. When I stopped I realized that engine has quietly stalled and i had to start it again.
What could it be? I noticed this was happening only during first 5-10 minutes of riding. Maybe because it was cold?
Well there's your problem, try stopping near the sign next time

Intermittent problems like this are always going to be hard to diagnose, it will be interesting to hear what honda have to say about it though (considering that it's a brand new engine for them too).
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post #8 of 79 Old 06-08-2011, 03:08 AM
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question??? could you be letting the clutch out too quickley...which leads to a possible stall? Sorry, you could be doing everything right, just had to ask

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post #9 of 79 Old 06-08-2011, 10:18 AM Thread Starter
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Quote:
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question??? could you be letting the clutch out too quickley...which leads to a possible stall? Sorry, you could be doing everything right, just had to ask
No, i am not releasing it at all, doing a full stop. I am pulling a clutch, holding it, and at the same time quickly (maybe too quickly) release throttle, apply front break, and shift two clicks down from third to first gear. I think it dies when i am doing a second "click" and passing thru neutral.
BTW -shifting down from second to first feels very different from any other shifts, its "longer" and i feel when it passes a neutral position.

Last edited by p4i1; 06-08-2011 at 10:23 AM.
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post #10 of 79 Old 06-08-2011, 10:54 AM
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Mine has never stalled when it wasn't my fault, I always use Shell V Power though. I also warm it up at least 2 minutes (1 bar) before leaving

2011 CBR250R- gas saver
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Last edited by somebody5788; 06-08-2011 at 11:02 AM.
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