Vulcan 900 Custom Valve Noise?? - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 30 (permalink) Old 12-26-2009, 03:02 PM Thread Starter
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Vulcan 900 Custom Valve Noise??

My 08 Custom has this odd ticking sound from the engine, I beleive it to be the valves, is it normal or does it require adjustment? I have over 15K miles on it and have done all required maintenance, also run Mobil 1 oil.
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post #2 of 30 (permalink) Old 12-26-2009, 07:46 PM
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I have not checked my manual but from memory i believe that valves require
a adjustment at 16000 kms, approx 10000 mikes. as part of the regular maintainence program. Check your service manual , it gives you required maintainence charts. Cheers Maurice

By the way, i rum Belray full synthetic oil and this has quietened down engine noise a lot.

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post #3 of 30 (permalink) Old 12-27-2009, 04:48 AM
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Well I just happen to have the manual in front of me (as it's winter and I can't ride for a while so maybe now I'll have time to read the rest of it) and Valve clearance should be inspected and presumably adjusted at 15,000 mi (24,000 km).

You said you already have over 15k miles on it and have done all required maint., did that also include the valve adjustment at 15K? And did the ticking sound start since then?

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post #4 of 30 (permalink) Old 12-28-2009, 12:01 PM Thread Starter
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Valve Noise?

I was under the impression from reading other forum threads that the 15k mile check of the valve clearance was unecessary since the vulcan has hydraulic lifters. Anyone have experience with this?
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post #5 of 30 (permalink) Old 12-28-2009, 09:29 PM
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It's my understanding that they're checked at 15k, and adjusted if necessary. These bikes are notorious for this and other little noises. Mine have always been a little noisy. A lot of guys just debaffle the pipes or get louder ones. Problem solved.

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post #6 of 30 (permalink) Old 12-29-2009, 09:05 AM
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I have an 08 900 Classic. I thought I heard a "ticking". I took my bike to the dealer for the 2nd oil change and to get the valves adjusted even though I have 4k mi and the manual says they need adjusted at 15k. The dealer listened to the bike and said that the valves do not need adjusted. The dealer said that some bikes need the valves adjusted at the first oil change and some need adjusted often, but the Vulcan 900s really do not need them adjusted until the 15k service. The valves are not hydrolic on the 900.

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post #7 of 30 (permalink) Old 01-01-2010, 05:52 PM
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Quote:
Originally Posted by scooter View Post
I was under the impression from reading other forum threads that the 15k mile check of the valve clearance was unecessary since the vulcan has hydraulic lifters. Anyone have experience with this?
Sorry, but you have been misinformed,. The 900 doesn't have hydraulic lifters, but uses shims of appropriate thickness for correct clearance or gap.

Normally the valve stem lengthens over time and miles; clearance is reduced or eliminated entirely thereby creating the possibility of burned valves, as the valve doesn't ever close completely.

The good news, is the valve adjustment on SOHC engines is simple and the Vulcan 900 is simpler than most SOHC engines as the rocker arms just slide out of the way being held in lateral position by only spring tension.

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post #8 of 30 (permalink) Old 01-01-2010, 08:30 PM
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the vulcan 900 does have a hydraulic chain tensioner however

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post #9 of 30 (permalink) Old 01-07-2010, 05:09 PM Thread Starter
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Valve Lash Checks

I've read alot concerning this topic and can't help to wonder why Kawi has this service check at 15K miles for US/CA bikes and 24K miles for EU/AU bikes, are they not the same engines (except for emission controls), valve checks every 15K miles just seems to me a bit excessive.
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post #10 of 30 (permalink) Old 01-07-2010, 05:38 PM
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Shiloh is correct, they need to be checked every 15,000 miles. The fact that yours are making noise is actually a good thing, it is when they get quiet that you need to get worried. Like mine are now. I'm approaching the 15K mile mark and will adjust mine as soon as it is warm enough in the garage to feel my fingers again.
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