Author Topic: Chirping and Timing Chain Noise  (Read 2609 times)

Offline scra99tch

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Chirping and Timing Chain Noise
« on: April 15, 2018, 11:32:14 AM »
2007 Vintage 32k

I have a slight chirping noise on startup when engine is cold only hear it when I blip the throttle.  After sitting all winter this happened last year and I had forgotten all about it.  This year same thing.  I crank the engine over for awhile as fresh gas makes its way to injectors, oil light goes out until it eventually fires.  I will let it run for a bit until I blip the throttle sounds like chirping is coming from the front of engine. 

Also noticed excessive chain noise.  Something I suspect is I will need to look at tensioner but is there a possibility that cam bearing is a little worn, hence the chirping?

I have not noticed any metal chips in the oil pan after last oil change. 
1974 Eldorado
2007 California Vintage

Offline Chuck in Indiana

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Re: Chirping and Timing Chain Noise
« Reply #1 on: April 15, 2018, 11:59:31 AM »
Quote
but is there a possibility that cam bearing is a little worn, hence the chirping?
  :shocked: I wouldn't think so..
Chuck in (Elwood) Indiana/sometimes SoCal
 
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Offline lucian

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Re: Chirping and Timing Chain Noise
« Reply #2 on: April 15, 2018, 12:11:40 PM »
Alternator bearing perhaps? Or maybe just old or loose  belt.
« Last Edit: April 15, 2018, 12:17:36 PM by lucian »

Offline Chuck in Indiana

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Re: Chirping and Timing Chain Noise
« Reply #3 on: April 15, 2018, 01:02:55 PM »
^^^^^ I'll buy the loose belt theory.  :smiley:
Chuck in (Elwood) Indiana/sometimes SoCal
 
87 AeroLario
95 Skorpion tour
26 Triumph trident 800
"Social media made y'all way too comfortable with disrespecting people and not getting punched in the face for it."

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Offline scra99tch

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Re: Chirping and Timing Chain Noise
« Reply #4 on: April 15, 2018, 01:06:46 PM »
Which belt?


1974 Eldorado
2007 California Vintage

Offline Idontwantapickle

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Re: Chirping and Timing Chain Noise
« Reply #5 on: April 15, 2018, 01:09:43 PM »
Crank mounted Alternator, no belts. Chirping could be vibration induced. Something up front on the frame or engine could be making the noise. Poke around while it does it and see if it stops making the noise as you put pressure on stuff bolted on around that area.
Hunter
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Offline rodekyll

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Re: Chirping and Timing Chain Noise
« Reply #6 on: April 15, 2018, 01:12:18 PM »
Where is the crank breather on that bike?  Could be the breather valve?

Offline guzzisteve

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Re: Chirping and Timing Chain Noise
« Reply #7 on: April 15, 2018, 01:15:48 PM »
Check exhaust flanges, loose pipes squeak. Just an idea.
« Last Edit: April 15, 2018, 01:22:12 PM by guzzisteve »
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Offline scra99tch

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Re: Chirping and Timing Chain Noise
« Reply #8 on: April 15, 2018, 01:48:06 PM »
No change when clutch pulled in or out so I can rule out disc. 

Just odd that it only happens when below 40 degs F.
1974 Eldorado
2007 California Vintage

Offline John Croucher

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Re: Chirping and Timing Chain Noise
« Reply #9 on: April 15, 2018, 01:59:33 PM »
All the stock cam chain tensioner does is keep the chain from hitting the crankcase.  It has no pressure with the spring made out of a bent paper clip.  Replace it with a Valtek. 

Offline Chuck in Indiana

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Re: Chirping and Timing Chain Noise
« Reply #10 on: April 15, 2018, 03:19:54 PM »
Crank mounted Alternator, no belts. Chirping could be vibration induced. Something up front on the frame or engine could be making the noise. Poke around while it does it and see if it stops making the noise as you put pressure on stuff bolted on around that area.
Hunter

Opps, it's a Vintage.. my bad. For whatever reason I was thinking it was a 1200..
Chuck in (Elwood) Indiana/sometimes SoCal
 
87 AeroLario
95 Skorpion tour
26 Triumph trident 800
"Social media made y'all way too comfortable with disrespecting people and not getting punched in the face for it."

Mike Tyson

 

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