weird squeal

EMSRacer07 · December 5th, 2012, 07:42 PM

Hey guys.

Cant seem to pinpoint this annoying noise. It sounds like a vacuum leak but when warmed up sounds like a squeal.

When I try to pin point it when it starts making the sound, it sounds like its coming from the oil filter :/. I thought it might be from the coolant lines but everything is fine. Vacuum lines are all fine. Battery isnt making the noise. Noise isnt coming from the crankcase breather either.

And the sound is more towards the back. Maybe around transmission or oil pan. But everytime i look i cant find anything that will be making that noise. This is with motor running and in neutral. Makes the sound in gear but I can hear it more when I am stopped in neutral.

Any ideas? Maybe the filter is moving? idk

choneofakind · December 5th, 2012, 07:47 PM

Stick your ear as close to the TB's as you can. Those air screws make a little puffing noise when air gets sucked by. It's possible that one of them is squeaking a little.

EMSRacer07 · December 5th, 2012, 07:53 PM

Quote:

Originally Posted by choneofakind

Stick your ear as close to the TB's as you can. Those air screws make a little puffing noise when air gets sucked by. It's possible that one of them is squeaking a little.

nope not even in that area, first place i looked. its literally under the bike. Sounds like the alternator or someplace in the oil pan. And only does it when the bike is warmed up

choneofakind · December 5th, 2012, 07:56 PM

Weird. Well that's all I could think of off the top of my head. Sorry Byron.

Subscribed for reading material.

Lychee · December 6th, 2012, 12:22 PM

A trick I have used when trying to locate odd noises back in my AE86 days is to poke a long screwdriver onto suspect areas and put your ear to the end of the handle. Locational noise would be amplified by contact with the screwdriver. You can also use a small hollow metal tube. They make car stethoscopes like this for this exact purpose.

Edit: It also helps to rev the engine and see if the pitch of the sound changes.

alex.s · December 6th, 2012, 03:23 PM

sounds like one of the trans bearings has a damaged ball maybe?

is there any play in the output shaft?

FrugalNinja250 · December 6th, 2012, 03:53 PM

Could be something in the oil pressure relief spring assembly.

Joshorilla · December 6th, 2012, 03:58 PM

Does it sound like this? If so it's the noise of a resonance within the gauge cluster caused ultimately by the speedo cable, you will need it stripped, re-built and re-lubed.

Link to original page on YouTube.

You can diagnose the noise by tapping the speedo hard with your hand, if the noise changes in pitch when you hit it, like tapping someone on the back when they are saying aaaaaaaahhhhhhhhhhhhhhh then that's it.

alex.s · December 6th, 2012, 04:01 PM

i think he said it happens when he is holding still idling it on stands which means the speedo cable isn't moving right?

alex.s · December 6th, 2012, 04:02 PM

oh!!! did you recently adjust your valves? did you remember to reset the cct?

Joshorilla · December 6th, 2012, 04:41 PM

Quote:

Originally Posted by alex.s

i think he said it happens when he is holding still idling it on stands which means the speedo cable isn't moving right?

My bad, I have to admit I just read weird squeal, and thought "Aha! I had/have that!"

DaBlue1 · December 7th, 2012, 07:33 AM

Not sure how you EFI system is set up, but could your fuel pump or relief valve make noise if it were bad or subject to temp changes?

EMSRacer07 · December 7th, 2012, 11:36 AM

Quote:

Originally Posted by alex.s

sounds like one of the trans bearings has a damaged ball maybe?

is there any play in the output shaft?

maybe a bit. Possible where the sound is coming from. Its rather the transmission or lower end of the block. Its hard to pinpoint

Ill try the screw driver trick.

EMSRacer07 · December 7th, 2012, 11:37 AM

Quote:

Originally Posted by Joshorilla

My bad, I have to admit I just read weird squeal, and thought "Aha! I had/have that!"

yeah and plus I dont have a speedo

. And yeah it happens and is louder more when bike is at a full complete stop.

EMSRacer07 · December 7th, 2012, 11:38 AM

Quote:

Originally Posted by DaBlue1

Not sure how you EFI system is set up, but could your fuel pump or relief valve make noise if it were bad or subject to temp changes?

noise isnt coming from either of them though. Literally put my ear next to them while it was running. Def not them.

December 5th, 2012, 07:42 PM	#1
EMSRacer07 ninjette.org sage Name: Byron Location: Reno, NV Join Date: Dec 2011 Motorcycle(s): Ninja ex250 1990 Posts: 761	weird squeal Hey guys. Cant seem to pinpoint this annoying noise. It sounds like a vacuum leak but when warmed up sounds like a squeal. When I try to pin point it when it starts making the sound, it sounds like its coming from the oil filter :/. I thought it might be from the coolant lines but everything is fine. Vacuum lines are all fine. Battery isnt making the noise. Noise isnt coming from the crankcase breather either. And the sound is more towards the back. Maybe around transmission or oil pan. But everytime i look i cant find anything that will be making that noise. This is with motor running and in neutral. Makes the sound in gear but I can hear it more when I am stopped in neutral. Any ideas? Maybe the filter is moving? idk __________________________________________________ 1990 250F. ex300 motor swap, 15/42 gearing, flush side markers, newgen intergrated front fairing, rear integrated turn signals, DB Touring Bubble, zx600 rear shock, Custom DanMoto Exhaust

December 6th, 2012, 03:23 PM	#6
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	sounds like one of the trans bearings has a damaged ball maybe? is there any play in the output shaft? __________________________________________________

December 6th, 2012, 04:01 PM	#9
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	i think he said it happens when he is holding still idling it on stands which means the speedo cable isn't moving right? __________________________________________________

December 6th, 2012, 04:02 PM	#10
alex.s wat Name: wat Location: tustin/long beach Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much. Blog Entries: 5 MOTM - Oct '12, Feb '14	oh!!! did you recently adjust your valves? did you remember to reset the cct? __________________________________________________

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December 5th, 2012, 07:47 PM	#2
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Stick your ear as close to the TB's as you can. Those air screws make a little puffing noise when air gets sucked by. It's possible that one of them is squeaking a little.

December 5th, 2012, 07:56 PM	#4
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Weird. Well that's all I could think of off the top of my head. Sorry Byron. Subscribed for reading material.

December 6th, 2012, 12:22 PM	#5
Lychee sail away Name: Jon Location: San Jose Join Date: Jul 2012 Motorcycle(s): gixxer (sold), ninjette (upgrade!) Posts: 964 Blog Entries: 8	A trick I have used when trying to locate odd noises back in my AE86 days is to poke a long screwdriver onto suspect areas and put your ear to the end of the handle. Locational noise would be amplified by contact with the screwdriver. You can also use a small hollow metal tube. They make car stethoscopes like this for this exact purpose. Edit: It also helps to rev the engine and see if the pitch of the sound changes.

December 6th, 2012, 03:53 PM	#7
FrugalNinja250 ninjette.org certified postwhore Name: Frugal Location: Dallas/Fort Worth (DFW) Join Date: Mar 2010 Motorcycle(s): Several Posts: A lot.	Could be something in the oil pressure relief spring assembly.

December 6th, 2012, 03:58 PM	#8
Joshorilla Bass Master General Join Date: Aug 2012 Posts: A lot. Blog Entries: 24	Does it sound like this? If so it's the noise of a resonance within the gauge cluster caused ultimately by the speedo cable, you will need it stripped, re-built and re-lubed. Link to original page on YouTube. You can diagnose the noise by tapping the speedo hard with your hand, if the noise changes in pitch when you hit it, like tapping someone on the back when they are saying aaaaaaaahhhhhhhhhhhhhhh then that's it.

December 7th, 2012, 07:33 AM	#12
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	Not sure how you EFI system is set up, but could your fuel pump or relief valve make noise if it were bad or subject to temp changes?