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Discussion Starter #1
Ok... So here's the situation. I have a 2007 900LT that I stored from November until about a week ago. Recently moved to Michigan from Virginia so this is the first time I ever stored the bike over the winter. So I changed the oil and filter, stabilized a full tank of gas, fogged the engine with fogging oil, washed and polished everything, covered it, and put the battery on a trickle charger. It has been beautiful out for the past few days so I took the bike out for a few runs...

Now onto the noise. It sounds like a loud ticking, almost like valve noise. It first appeared after the first 20 miles. It only comes through after the bike is warmed up and only under load (at least 2.5k rpm). Bike runs great, just sounds like hell.
I checked the valves and the front exhaust valves were both about 0.05mm loose. So I'm thinking "sweet, fixed".
Replaced the shims to spec, took it for a ride and still that damn noise.
Fogged the engine with sea foam deep creep, noise still there.
Topped the tank off with premium shell v power, noise still there.

Do you think I should keep running it and give it more time to work off the cobwebs? I would hate to take it to a shop because I am cheap, stubborn as hell and prefer doing things myself. Any ideas? Anything else I should be checking?

Thanks for any help.
 

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Ok... So here's the situation. I have a 2007 900LT that I stored from November until about a week ago. Recently moved to Michigan from Virginia so this is the first time I ever stored the bike over the winter. So I changed the oil and filter, stabilized a full tank of gas, fogged the engine with fogging oil, washed and polished everything, covered it, and put the battery on a trickle charger. It has been beautiful out for the past few days so I took the bike out for a few runs...

Now onto the noise. It sounds like a loud ticking, almost like valve noise. It first appeared after the first 20 miles. It only comes through after the bike is warmed up and only under load (at least 2.5k rpm). Bike runs great, just sounds like hell.
I checked the valves and the front exhaust valves were both about 0.05mm loose. So I'm thinking "sweet, fixed".
Replaced the shims to spec, took it for a ride and still that damn noise.
Fogged the engine with sea foam deep creep, noise still there.
Topped the tank off with premium shell v power, noise still there.

Do you think I should keep running it and give it more time to work off the cobwebs? I would hate to take it to a shop because I am cheap, stubborn as hell and prefer doing things myself. Any ideas? Anything else I should be checking?

Thanks for any help.
There's a post somewhere else about the automatic cam chain tensioner making noise when it's about to adjust itself. Maybe that's what yours is doing?
On the other hand, maybe it's just stretching and cracking it's joints after that long winter's rest?:eek:
 

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Discussion Starter #3
Hmm. I thought about cam chain noise, but figured that since it was a hydraulic tensioner there was nothing that I could do. Does the tensioner not continuously keep itself adjusted? Is it possible that there is no oil getting to the tensioner (I am assuming that the hydraulics are simply from crankcase oil routing)? Since the bike runs fine I am guessing that there are no oil passages blocked. I have put about another 20 miles on it since the noise started with no change.
 

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Check your header bolts, and the rest of the exhaust.
Check rectifier cover (removed for oil change)...make sure that isn't rattling.
Without starting another flaming oil thread...examine your choice and switch to a good quality synthetic....our bikes have the notorious "kawi tick"....mine has settled down, or, I just don't hear it anymore.
Finally, switch to regular unleaded. Some 9's HATE premium. Mine is one of them. It ticks like CRAZY ON PREMIUM.
Keep us posted.
 

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Discussion Starter #5
Yeah I checked the header bolts too and they were a little under torque. Tightened them and the exhaust heat shields and noise is still there.
I have always used Mobil 1 10w-40 full synth (motorcycle specific), and never heard this, so I doubt it is the oil brand. Unless it took on moisture during storage or something. Yeah not getting into any kind of oil brand debate here, but I will keep it in mind.
I have actually found the same thing with my 9 and premium gas. Dealer told me to only run premium, but the bike runs much better on regular. It had regular gas (stabilized) in it from over the storage. When I heard the noise I added in about 2 gallons premium to give a quick boost to the octane. I read somewhere of someone with a similar problem and that fixed it, but no dice here.

I will check the rectifier and cover bolts to make sure that they are tight.
I am also going to drain the old gas out of the tank and replace it with fresh regular.
If that doesn't work I am going to drain and change the oil and filter. Sucks that the oil is only 70 miles in, but it is cheaper than a trip to the stealer.
Thanks for the ideas.
 

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Does the sound come from the engine or the exhaust pipes. Often hard to tell. Something loose perhaps in the exhaust baffles? I had a similar problem on my bike. Sounded so much like valve noise and audible when engine got warm and under power. After a while is was happening all the time. I found it by running my hands over the bike until I touched the right thing and the sound stopped. It was the plate on the end of one of the the exhaust pipes. Drilled out the rivets and popped in new ones in. Problem gone. I would have bet money it was valve sound and I would have lost. Maybe you will get lucky and it is this simple for your bike. Good luck.
 

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Discussion Starter #7
I am almost positive it is coming from the engine. I checked the header bolts and heat shields (I have roadhouse 2-1 aftermarket pipes, and I changed out the gaskets when they were installed two years ago) but I will check again. Putting some pressure on different parts while the ticking is coming through is a good idea that may help me localize any loose part.

It sounds like the noise is coming from the left side of the front cylinder, which is why I was thinking valves. The cam chain is also there and I have heard of those making similar noises when they need adjusting. However, the 900 has hydraulic cam chain tensioners so I don't think there is really anything for me to check there.

Thanks for the help.
 

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Correct RON

Ok... So here's the situation. I have a 2007 900LT that I stored from November until about a week ago. Recently moved to Michigan from Virginia so this is the first time I ever stored the bike over the winter. So I changed the oil and filter, stabilized a full tank of gas, fogged the engine with fogging oil, washed and polished everything, covered it, and put the battery on a trickle charger. It has been beautiful out for the past few days so I took the bike out for a few runs...

Now onto the noise. It sounds like a loud ticking, almost like valve noise. It first appeared after the first 20 miles. It only comes through after the bike is warmed up and only under load (at least 2.5k rpm). Bike runs great, just sounds like hell.
I checked the valves and the front exhaust valves were both about 0.05mm loose. So I'm thinking "sweet, fixed".
Replaced the shims to spec, took it for a ride and still that damn noise.
Fogged the engine with sea foam deep creep, noise still there.
Topped the tank off with premium shell v power, noise still there.

Do you think I should keep running it and give it more time to work off the cobwebs? I would hate to take it to a shop because I am cheap, stubborn as hell and prefer doing things myself. Any ideas? Anything else I should be checking?

Thanks for any help.
Check your manual for the RON. Are you using the correct RON fuel?

( RON Octane Rating x 0.95 = AKI Octane Rating )
98 RON Octane x 0.95 = 93.1 AKI Octane (US measure)
100 RON Octane x 0.95 = 95 AKI Octane (US measure)

My 2010 Vulcan 900 classic Lt calls for 91RON which is regular US gas.

bearpawh
 

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Discussion Starter #9
Oh I am using the fuel that was stabilized in the tank over the winter. It is/was 87 octane, but who knows what the rating is now. First thing I am going to try this weekend is draining the tank and putting in fresh 87 octane. I have always run regular in the bike and it has always run great til now. If the fuel change doesn't fix the problem I will change the oil and filter and then see how it sounds. My guess would be that the fresh fuel will do the trick, but I also said the same thing about the valves...
 

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I had a similar noise on my 09 classic. I pluged the hose going from the top of air cleaner to the air injection valve under the tank. Search for "marbling" in the forum google search. The reed valves inside the cylinder head can make quite a racket. No problems, and no more backfiring either.
 

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Tick

I'm not a mechanic....far from it, but could it possibly be the Spark Plugs needing changed??? Just a thought. :) Good Luck.
 

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Discussion Starter #12
Should have mentioned in the original post, but I actually removed the air switching valve and hoses all together on my bike awhile ago. I plugged the ports on the tops of the cylinders and the back of the air filter housing (I also have a BAK) with vacuum caps and installed a jumper into the air switching valve plug. I replaced the vacuum caps on top of the cylinders when the noise started thinking that there may be a leak in one of them, but no such luck. I also reinstalled the air switching valve to see if that made a difference and it didn't so I pulled it back off. My understanding is if you are going to marble the hose leading to the air switching valve, then you basically just end up with a bunch of hoses that aren't doing anything, so why not remove them and clean up with engine.
 

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Discussion Starter #13
The plugs aren't that old, and they looked good when I pulled them to check the valve clearances. I had another set though so if changing the gas doesn't work, I can easily pop in the new plugs and see if that makes a difference. I guess I can see how fogging the engine can result in fouling the plugs, but I would assume that would also cause some pretty rough engine running (which I don't have). It is certainly worth a shot though.
 

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Or.....u could just have the dreaded Kawi-tick....lol. Have u had the bike since new?..or bought it, rode it and laid it up for the winter.Since u cleaned up the engine and removed all the hoses....u might be hearing that tick in all it's glory!.lol
Good luck!

On a sidenote, there are guys who post their tick on youtube.....it's so pronounced.....check out their vids to see if yours sound the same. I mean I had one guy who came over at the gaspump and said "dude, ain't that a new bike? Why is it ticking so loud"
It's a major quirk of the nine.
 

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Discussion Starter #15
I haven't had the bike since new, but I bought it used from a dealer back in 2008 so I am pretty familiar with the usual noises coming from the engine. Air switching valve and hoses have been removed for well over a year now, so I would imagine that any new noises would have developed before the winter layover.
 

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Discussion Starter #17
Ah the kawa tick... I am familiar with the tick unfortunately. I only hear this noise under load though and it is way louder than the famed tick.Not sure why raising my idle would cure a noise heard only under load.
 

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Discussion Starter #18
Well here are some updates on what has been going on... I drained the gas tank and filled it with fresh 87 octane. Engine knock still there. Changed out the spark plugs. Engine knock still there. Changed the oil and filter with fresh Mobil 1 V-Twin 10w-40. Engine knock still there. I am sure that this sound isn't the normal noises coming from kawasaki engines. Not a ticking of the fuel injectors, and not a loose part somewhere. It sounds a lot like a knock in the engine and I am starting to pick it up a little at idle now too.

I haven't made any mods to the bike over winter storage, so nothing new has gone onto it that I can think of that would cause the change.

I am starting to wonder now if my air/fuel ratio is off. I have a BAK aftermarket air kit, roadhouse 2 into 1 pipes and a cobra PowrPro fuel processor. I wonder if the fuel processor stopped working right. There are no indicators on it except for a red light that supposedly tell you "everything is working right".

Looks like after all of this it might be a trip to the stealer after all.
 
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