Loud squealing for 3 sec on cold start

FuelCell · 08-30-2010, 09:49 PM

This morning my '86 Ninja 250 emitted a loud squealing sound from the crankcase when I started it. After about 3 seconds, it quit squealing and ran fine.

Now, when it's cold, it squeals. When it's warm, it's fine.

I really hope it's not rod or main bearings. Ideas? Opinions?

Back Of The Pack · 08-30-2010, 09:57 PM

Maybe your starter is going?

turbolq4 · 08-30-2010, 09:58 PM

if its not the starter, its probably bearings

whitedevil · 08-30-2010, 10:05 PM

hate to say it, but sounds like rod bearings ....

Waldo · 08-31-2010, 05:45 AM

My 90 ZX7 does that. It is the alternator belt (I know, I know bikes do not have belts-Kawasaki’s DO). After changing it, I had to play with the adjustment to get it to stop.

I just check the parts listings. If your bike is the EX250-E1 Ninja 250R (1986) than you do not have a belt. I would try and localize the sound to see where on the motor it is coming from.

FuelCell · 08-31-2010, 11:28 AM

Quote:

Originally Posted by turbolq4

if its not the starter, its probably bearings

Quote:

Originally Posted by whitedevil

hate to say it, but sounds like rod bearings ....

Agreed. Sad face.

Quote:

Originally Posted by Waldo

If your bike is the EX250-E1 Ninja 250R (1986) than you do not have a belt. I would try and localize the sound to see where on the motor it is coming from.

'86 to '07 changed very very little, no belts. The 08-09's barely changed as well. The sound if definitely coming from the bottom of the crank case.

theduckllr · 08-31-2010, 11:36 AM

Quote:

Originally Posted by whitedevil

hate to say it, but sounds like rod bearings ....

If it is, without immediate teardown, you will certainly find out soon enough.

whitedevil · 08-31-2010, 12:50 PM

change the oil and check the filter for metal or brass shavings....

lil_schmitty · 08-31-2010, 01:59 PM

sounds like a good excuse to upgrade

CBRF2Old · 08-31-2010, 04:02 PM

Let me know if you want to borrow my stethoscope to try to pinpoint the noise.

DB Cooper · 08-31-2010, 05:43 PM

Time to get rid of that bike, move on to a newer bike, 600CC time.

lil_schmitty · 08-31-2010, 06:18 PM

Just don't turn into a 130 mph wheelie riding douche like the rest of us.

whitedevil · 08-31-2010, 09:40 PM

Quote:

Originally Posted by lil_schmitty

Just don't turn into a 130 mph wheelie riding douche like the rest of us.

Now that statement is both priceless and ironic! LOVE IT!!!!!

FuelCell · 09-09-2010, 09:33 AM

Quote:

Originally Posted by DB Cooper

Time to get rid of that bike, move on to a newer bike, 600CC time.

I've been wanting a 600 for a couple years now, but I think it will be more economical to find and fix the problem on the 250. It's not worth much as it sits.

Between work and school, I don't have time to do anything other than leave it on stands in the corner of the garage. When I have time for the project, I'll post up!

08-30-2010, 09:49 PM	#1
FuelCell Senior Member Joined: Jan 2009 From: Eagle, ID Posts: 378 I Ride: 2009 Suzuki SV650S	Loud squealing for 3 sec on cold start This morning my '86 Ninja 250 emitted a loud squealing sound from the crankcase when I started it. After about 3 seconds, it quit squealing and ran fine. Now, when it's cold, it squeals. When it's warm, it's fine. I really hope it's not rod or main bearings. Ideas? Opinions?

08-31-2010, 05:45 AM	#5
Waldo Joined: Jun 2007 From: What does it matter? Posts: 1,825 I Ride: RVT1000R RC51 SP1/SP2	My 90 ZX7 does that. It is the alternator belt (I know, I know bikes do not have belts-Kawasaki’s DO). After changing it, I had to play with the adjustment to get it to stop. I just check the parts listings. If your bike is the EX250-E1 Ninja 250R (1986) than you do not have a belt. I would try and localize the sound to see where on the motor it is coming from. Last edited by Waldo; 08-31-2010 at 05:52 AM.

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08-30-2010, 09:57 PM	#2
Back Of The Pack Senior Member Joined: Apr 2009 From: K-town Posts: 1,430 I Ride: The "1" and its little sister.	Maybe your starter is going?

08-30-2010, 09:58 PM	#3
turbolq4 Senior Member Joined: Aug 2009 From: mur-ville Posts: 1,166 I Ride: 95 CR500R, various sleds	if its not the starter, its probably bearings

08-30-2010, 10:05 PM	#4
whitedevil Senior Member Joined: May 2008 From: Que Nah Posts: 6,258 I Ride: F4i CBR600	hate to say it, but sounds like rod bearings ....

08-31-2010, 12:50 PM	#8
whitedevil Senior Member Joined: May 2008 From: Que Nah Posts: 6,258 I Ride: F4i CBR600	change the oil and check the filter for metal or brass shavings....

08-31-2010, 01:59 PM	#9
lil_schmitty Senior Member Joined: Aug 2007 From: 2C Posts: 674 I Ride: 09 R1	sounds like a good excuse to upgrade

08-31-2010, 04:02 PM	#10
CBRF2Old Joined: Aug 2006 From: Boise Posts: 4,856 I Ride: 83 and 84 Honda Ascot's and 91 CBR600F2	Let me know if you want to borrow my stethoscope to try to pinpoint the noise.

08-31-2010, 05:43 PM	#11
DB Cooper Senior Member Joined: Apr 2008 Posts: 636	Time to get rid of that bike, move on to a newer bike, 600CC time.

08-31-2010, 06:18 PM	#12
lil_schmitty Senior Member Joined: Aug 2007 From: 2C Posts: 674 I Ride: 09 R1	Just don't turn into a 130 mph wheelie riding douche like the rest of us.