S2R1000 Chirping Sound from Intake

jgrm1 · April 24, 2012, 01:31:24 PM

After my 7500 miles service, which I performed, I've noticed a chirping through the air box while acceleration. The chirping gets louder the harder I accelerate. I have verified that everything (valve clearances, TPS reset, TB sync at idle and 5000 RPM) is in spec, but something has changed to cause it. I cannot find any intake leaks and nothing but the balance taps were disturbed. The RH TB air bypass screw is closed and the LH screw is just open. Any ideas?

Thank you,
Jeff

WetDuc · April 24, 2012, 04:26:25 PM

Can you record audio?
My 1000DS honked like crazy with the stock exhaust, DP ECU and open airbox. Are you running that setup?

jgrm1 · April 25, 2012, 02:30:09 PM

No, I am running Termis, DP air filter and DP ECU. It is a chirp-chirp-chirp. I started to describe it as a whistle, but it isn't a steady tone.

-Jeff

WhiteStripe · April 26, 2012, 08:53:22 AM

Is the sound more like the first, second, or third clip?
http://www.millerarts.com/interactive/BubbRubb/BubbRubbSoundBoard.html

sorry - someone had to do it.

Speeddog · April 26, 2012, 09:03:54 AM

Have you verified valve clearances *after* it started chirping?

I'm suspecting you've got an opener too tight and an intake valve is open a bit.

jgrm1 · April 27, 2012, 07:03:02 AM

Quote from: Speeddog on April 26, 2012, 09:03:54 AM
Have you verified valve clearances *after* it started chirping?

I'm suspecting you've got an opener too tight and an intake valve is open a bit.

I checked the valve clearances and found them spot on. No adjustment was made, so the valve clearances have been constant.

-Jeff

WetDuc · April 27, 2012, 10:18:34 AM

What did you do when you did the 7500mile service?

jgrm1 · May 03, 2012, 08:17:14 AM

Quote from: WetDuc on April 27, 2012, 10:18:34 AM
What did you do when you did the 7500mile service?

Everything required.

I am going to check the timing belts to see if one jumped a tooth. Maybe a valve is not closing fully allowing some blow by.

Something else I want to investigate is an oil film on the oil breather connector at the engine case. Is there something going there that is would cause a sound that would emminate from the airbox as a "chirp."

-Jeff

lilmonster · May 04, 2012, 09:29:36 AM

My crankcase breather cracked on my S2R1000. It did not make a chirp while running but just after killing the engine it made a long chirp or sound like a Goose call (rather than a Duc

) Some of the sound could be heard from the intake area. I have the full Termi system also.

jgrm1 · May 05, 2012, 08:24:27 AM

Quote from: lilmonster on May 04, 2012, 09:29:36 AMSome of the sound could be heard from the intake area.

Interesting.

-Jeff

lilmonster · May 05, 2012, 05:31:03 PM

The breather may not be your problem but I had a "chirping sound" that turned out to be the breather. There is a hose going from the breather to the oil breather tank, then a hose going from the tank to the air box that can let some sound pass through to the airbox, especially with the open lid. I replaced the breather and that fixed my noise. I hope you figure it out.

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S2R1000 Chirping Sound from Intake