Strange noise from 800 - Team-BHP

DCEite · 4th November 2005, 09:13

whenever i revv my 7 year old carb 800, a screaching sound is heard.. i wonder what it is.. its a kind of screaching whistle.. (i have heard this sound in some old model Indicas as well..).. any idea?..

Buffetfan · 4th November 2005, 10:44

could be a alternater belt sound...get the belt and associated pullies / theri bearings checked....

2fast4u · 4th November 2005, 10:57

ya its only the belts. and i believe the screeching sound is occassional or mostly when you start to move from standstill, once on the move the sound disappears.

DCEite · 4th November 2005, 13:09

Quote:

Originally Posted by 2fast4u

ya its only the belts. and i believe the screeching sound is occassional or mostly when you start to move from standstill, once on the move the sound disappears.

spot on!.. going to mechanic now..

tsk1979 · 4th November 2005, 14:40

Make sure that the mechanic does not employ the "mobil oil" cure and actually tightens the belt.

n_aditya · 4th November 2005, 15:52

I had the same problem with my brand new 800.

Used to produce that sound only during the first start of the day (cold engine).... Got the timing chain /belt fixed and the packing replaced.

It is all right now.

So it may be the timing belt problem. Anyways dont ignore the sound rush to a mechanic.

ananthkamath · 4th November 2005, 16:54

Quote:

Originally Posted by n_aditya

I had the same problem with my brand new 800.

Used to produce that sound only during the first start of the day (cold engine).... Got the timing chain /belt fixed and the packing replaced.

It is all right now.

So it may be the timing belt problem. Anyways dont ignore the sound rush to a mechanic.

I think you mean the alternator belt. Timing belts are cogged and can never slip to cause this sound. If they do, your engine is as good as scrap in the first few seconds of running.

2fast4u · 5th November 2005, 10:33

Quote:

Originally Posted by ananthkamath

I think you mean the alternator belt. Timing belts are cogged and can never slip to cause this sound. If they do, your engine is as good as scrap in the first few seconds of running.

exactly. wonder if it slipped would like to have a view of the snapped pistons crank etcetc.

4th November 2005, 09:13	#1 (permalink)
DCEite Distinguished - BHPian Join Date: Sep 2004 Location: (Gur)Gaon Posts: 1,943 View My Garage	Strange noise from 800 whenever i revv my 7 year old carb 800, a screaching sound is heard.. i wonder what it is.. its a kind of screaching whistle.. (i have heard this sound in some old model Indicas as well..).. any idea?..

4th November 2005, 10:57	#3 (permalink)
2fast4u BHPian Join Date: Mar 2005 Location: pune / Bahrain Posts: 447 View My Garage	ya its only the belts. and i believe the screeching sound is occassional or mostly when you start to move from standstill, once on the move the sound disappears. __________________ 332kmph 1999 unrestricted GSXR1300R ROYAL ENFIELD MACHISMO 1992 636 RB20DET NISSAN

4th November 2005, 14:40	#5 (permalink)
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: Noida, New Delhi Posts: 8,793 View My Garage	Make sure that the mechanic does not employ the "mobil oil" cure and actually tightens the belt. __________________ Reclaiming.....!

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4th November 2005, 10:44	#2 (permalink)
Buffetfan BHPian Join Date: May 2005 Location: Hyderabad Posts: 562	could be a alternater belt sound...get the belt and associated pullies / theri bearings checked....

4th November 2005, 15:52	#6 (permalink)
n_aditya Senior - BHPian Join Date: Oct 2005 Location: Currently at Chennai. Originally from Blore. Posts: 1,713	I had the same problem with my brand new 800. Used to produce that sound only during the first start of the day (cold engine).... Got the timing chain /belt fixed and the packing replaced. It is all right now. So it may be the timing belt problem. Anyways dont ignore the sound rush to a mechanic.