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  #1  
Old 07-26-2010, 03:32 PM
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Default How do I know vavles need to be adjusted

Is there a way to tell if valves need to be adjusted, besides a time schedule. Any sounds or traits that come off bikes that need valves adjusted? I ride a Honda CRF250R, 07'
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Old 07-26-2010, 07:19 PM
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It won't start

The hot start when the engine is running doesn't make it idle up

Thats about it really....and when those things start to happen they are already way out of adjustment and probably hitting. You need to pull the valve cover and check them....thats the only way to be sure.
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Old 07-26-2010, 09:57 PM
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Quote:
Originally Posted by MotoMan View Post
It won't start

The hot start when the engine is running doesn't make it idle up

Thats about it really....and when those things start to happen they are already way out of adjustment and probably hitting. You need to pull the valve cover and check them....thats the only way to be sure.
Ah ok, my dad's snowmobile mechanic is coming down to show me how too check and adjust them

Also my bikes not starting normal (takes longer) so I just thought it might have been valves, thanks for the answer
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Old 07-28-2010, 10:16 PM
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hard starting when hot or cold, backfiring and popping when riding, those are some easy to find hints that your valves need adjusting. a compression test would help, and learn how to check the valve adjustment with a feeler gauge.
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Old 07-28-2010, 11:08 PM
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Quote:
Originally Posted by ed_563 View Post
...a compression test would help...
A compression test is worthless on any bike that uses a de-comp system to aid starting.
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Old 08-10-2010, 08:52 PM
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Quote:
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A compression test is worthless on any bike that uses a de-comp system to aid starting.
thats not what the manual says on my 04 rmz 250
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  #7  
Old 09-27-2010, 09:40 AM
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its easy to check them, get you a shop manual and check them. I personally check my valves every ten hours or so just to make sure they are good. easier to reshim than to revalve!!!!
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Old 09-27-2010, 12:35 PM
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you have to disconnect the auto decompression or else its pointless to d a compression test because you will only get like 70 psi with it still connected.
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Old 09-27-2010, 03:47 PM
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if you make a thread like this, it's time to check the valves
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Old 09-27-2010, 05:04 PM
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It is called PM...preventitive maintenance. It is real easy to pull the gas tank and valve cover off to check. 9x out of ten they won't need adjusting, but if they do...you can save yourself alot of work, money and headaches by catching a problem ahead of time.
Oh and guys...listen to Faded...he knows his chit! Tdub
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Old 09-27-2010, 06:50 PM
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Do any of you really wait for a compression loss to check your valves?
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