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High Pitch "Ping" - Diagnostic Help?

Started by JMac, July 26, 2009, 07:14:49 AM

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JMac

July 26, 2009, 07:14:49 AM
Getting a high pitched ping in the motor...almost like a small bell.  This started after I changed out the clutch line from the handle bars.  Clutch is engaging pretty smoothly (although still jumps a bit when kicked into first).  I have not checked valves yet (10k miles right now).  Changed gas type (both location and octane).  So I suppose the question is...should I start with the clutch or is the high-pitched bell-like pinging a direct symptom of the valves needing to be shimmed?  Thanks for your help!


JMac - San Antonio

1999 Ducati Monster 750
Ducati Red
Pullman Bars
Bar end mirrors
Tail chop/license plate relocated
LED Tail w/Turnsignals

ducpainter

#1
July 26, 2009, 07:25:23 AM
Is the ping/ring worse when cold?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


JMac

#2
July 26, 2009, 02:57:29 PM
It is a bit worse when cold, but the only noticeable difference is at low RPMs...when it is revving it either goes away or the pipes are drowning out the sound!
JMac - San Antonio

1999 Ducati Monster 750
Ducati Red
Pullman Bars
Bar end mirrors
Tail chop/license plate relocated
LED Tail w/Turnsignals

ducpainter

#3
July 26, 2009, 04:11:10 PM
I had a 750 SS that sounded like it was beating itself to death.

I'll bet you're losing the hockey pucks in between the cylinder fins.

The noise I believe you're hearing is called fin ring.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


wiggy_nz

#4
July 26, 2009, 11:18:03 PM
"Changed gas type (both location and octane)"????  Are you using a low octane of fuel...if soit is probably engine ping.  Change to a higher octane ie 95 or better
Current bike - 2005 S4R Monster
Sold 1997 Red 900 Monster
Sold 1999 Yellow 750 Monster
Can not keep the silly smile off my face when using my Monster :-)

Simon

#5
July 27, 2009, 08:21:14 PM
Quote from: ducpainter on July 26, 2009, 04:11:10 PM
I had a 750 SS that sounded like it was beating itself to death.

I'll bet you're losing the hockey pucks in between the cylinder fins.

The noise I believe you're hearing is called fin ring.


Will it cause any problems?, the hockey pucks from my 620 falling off one at a time.

Howie

#6
July 28, 2009, 04:51:25 AM
Quote from: simoniz on July 27, 2009, 08:21:14 PM
Will it cause any problems?, the hockey pucks from my 620 falling off one at a time.

You might get a ticket for littering.

Simon

#7
July 28, 2009, 06:22:03 AM
 :D that's it. Then its no problem.

Thanks
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