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Old 11-25-2012, 08:24 AM   #1
Mobasher
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Question Sparking sound from front cylinder

I have Vulcan 900 classic Lt 2011. I have just done 2000 miles on it and recently it developed sparking sound in front cylinder. I have changed spark plugs, checked plug lead and adjusted teppits but the trouble persist. The bike performance is otherwise fine. Can anybody help with diagnose.
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Old 11-26-2012, 08:24 AM   #2
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It could be the fuel injectors that you hear clicking.

Here is one thread on subject. http://www.vulcanforums.com/forums/s...ng+fuel+system

Last edited by mcdonaldjg; 11-26-2012 at 08:25 AM. Reason: spelling
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Old 11-26-2012, 08:55 AM   #3
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Thanks, it's not fuel injection click. The sound is heard even on idling and at infrequent intervals.
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Old 11-26-2012, 10:26 AM   #4
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Since it runs fine it may be a small exhaust leak at the exhaust flange. I've read in this forum where some folks have experienced the acorn nuts loosening. Good luck.
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Old 11-26-2012, 11:25 AM   #5
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Smile Sparking sound in front cylinder

Thanks, I will check this over the weekend
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Old 11-26-2012, 01:45 PM   #6
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Could it just be the AIS and you're just now noticing it?
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Old 11-26-2012, 04:03 PM   #7
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What Is AIS ?
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Old 11-26-2012, 05:21 PM   #8
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Air Induction System?
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Old 11-26-2012, 06:33 PM   #9
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Haven't had my Vulcan long but noticed a clicking above and behind the air box near the front cylinder. Did some research and found that it's a system the puts air into the exhaust to burn excess fuel (AIS). There is an actuator in the system that opens a valve and that is the clicking I was hearing. It is irregular and may be what you are hearing too. It's normal if so. Somebody may be able to add to this with more knowledge than I have.
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Old 11-27-2012, 12:14 PM   #10
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Quote:
Originally Posted by Infinite_Day View Post
Haven't had my Vulcan long but noticed a clicking above and behind the air box near the front cylinder. Did some research and found that it's a system the puts air into the exhaust to burn excess fuel (AIS). There is an actuator in the system that opens a valve and that is the clicking I was hearing. It is irregular and may be what you are hearing too. It's normal if so. Somebody may be able to add to this with more knowledge than I have.
Ever since I installed my Air Intake System I hear alot more sounds. Injector ticking is more defined, as well as, what you mention above with the AIS. Under accelerating throttle seems I even hear the jugs sucking air like my compressor. I think the stock airbox used to insulate these sounds alot more.
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