Burnt Valves at 15K miles? - Honda CBR250R Forum : Honda CBR 250 Forums
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post #1 of 113 Old 08-29-2014, 09:16 PM Thread Starter
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Burnt Valves at 15K miles?

I have just been informed that my 2012 cbr has burnt valves. He states the valve clearances were normal but compression test revealed a valve issue. He took it apart today and said that the valves were burnt and they need to go to the machine shop and another 8 hours of labor! When I asked what could cause this he said since the clearances were good the only thing he could think of is bad gas! I've put 15k miles on it in two years. It is a commute vehicle and gets a new tank every week! Have I been transported to another planet or is this a common thing with this bike?
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post #2 of 113 Old 08-30-2014, 03:29 AM
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First time I hear of that....
Wouldn't it be cheaper to just buy new valves than letting someone work on them for 8 hours?

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post #3 of 113 Old 08-30-2014, 03:40 AM
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Have you ever ran premium fuel in it?




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post #4 of 113 Old 08-30-2014, 06:39 AM
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Is the O2 sensor working?

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post #5 of 113 Old 09-02-2014, 04:06 PM Thread Starter
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Update

After full inspection, it was noted that the valve clearance was right on but they still got burnt. There is currently no explanation as to why they got burnt. Tech is stumped. Tech was told by another honda dealership that they had two bikes in their shop with same problem. I smell a recall.
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post #6 of 113 Old 09-02-2014, 04:10 PM Thread Starter
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All sensors checked out. That is with new valves/parts. He said machine shop is only if he takes the valves out and the part they sit on need machining. He wouldn't know if that is needed until he gets into it further. I'm not understanding the extra labor either. A valve job covers dismantling and putting it back together. Shouldn't it just be an extra charge for the parts? What am I missing?
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post #7 of 113 Old 09-02-2014, 04:11 PM Thread Starter
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Oh and never ran premium fuel as owners manual specifically says not to.
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post #8 of 113 Old 09-02-2014, 04:23 PM
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Sounds like bad fuel or someone poured sugar in your tank.
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post #9 of 113 Old 09-03-2014, 01:15 PM
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Quote:
Originally Posted by brownbrady View Post
Sounds like bad fuel or someone poured sugar in your tank.
Last time I checked the tanks had a lock.

My computer is fighting Aids and Cancer in it's idle time, and yours?
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post #10 of 113 Old 09-03-2014, 01:24 PM Thread Starter
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New tank every week. Honda techs are saying it is a design flaw. That oil isn't getting to the top of the engine. If that's the case, why aren't we hearing more about it? Nobody here is having this problem. I do find it interesting that when I got it serviced at Honda, they always put too much oil in it. Once I got it serviced outside of honda the oil was filled perfectly to the line and a thousand miles later...burnt valves.
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