Noise under load - Wrist Twisters
 
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post #1 of 5 Old 07-01-2016, 08:23 AM Thread Starter
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Noise under load

I have been trying to search to find the answer, but got nothing. Since I bought the bike (2003 919 with 30k miles), before any mods, I noticed that under hard acceleration in a higher gear, meaning lower RPM range, there is what sounds like a tapping/clunking noise coming from the engine. I have always brushed it off as nothing, and it has not gotten any worse since doing the PAIR valve mod, the flapper mod, K&N filter, or CBR900rr header. Still the same sound, in the same RPM range, only under hard acceleration. Any thoughts on what it could be? Does this sound like a possible valve clearance issue? Should I be worried?

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post #2 of 5 Old 07-01-2016, 08:48 AM
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Injector noise. 3-4K RPM range?

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post #3 of 5 Old 07-01-2016, 08:53 AM
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Quote:
Originally Posted by HondaJim View Post
Injector noise. 3-4K RPM range?
+1 to this answer!
It's been there since day 1 for me and I've grown to like it.

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post #4 of 5 Old 07-01-2016, 09:42 AM Thread Starter
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Quote:
Originally Posted by HondaJim View Post
Injector noise. 3-4K RPM range?
Yep. 3-4/4.5k range. Thanks!

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post #5 of 5 Old 07-01-2016, 10:47 AM
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That's the sound of the bike telling you to HOLD ON, HERE WE GO!

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